History Study Context of the Election The 1932 presidential election occurred during the Great Depression, a time of severe economic hardship in the United States. Herbert Hoover's popularity was at an all-time low due to his perceived ineffectiveness in addressing the economic crisis. Roosevelt, despite his elite background, positioned himself as a candidate for change, appealing to the public's desire for new leadership. Franklin Roosevelt's Campaign Strategy Roosevelt campaigned tirelessly, engaging with the public and presenting himself as a relatable figure despite his wealth. He emphasized empathy and understanding of the public's suffering, partly due to his own battle with polio. His famous declaration at the Democratic National Convention, 'I pledge myself to a new deal for the American people,' resonated with voters seeking hope. Election Results and Public Sentiment Roosevelt won the election decisively, receiving 57% of the popular vote and carrying all but six states. The election marked a significant shift in American politics, forming a new Democratic coalition that included diverse groups such as African Americans and organized labor. The public's rejection of Hoover's policies indicated a strong desire for reform and a new direction for the country. Franklin Roosevelt's Background and Characteristics Personal and Political Background Born into wealth and educated at prestigious institutions, Roosevelt had a background that could have aligned him with the political elite. His political experience included serving in the New York State legislature, a vice-presidential nomination, and as governor of New York, where he implemented state-level reforms. Roosevelt's physical challenges due to polio contributed to his understanding of public suffering and shaped his empathetic approach to leadership. Public Perception and Image Management Roosevelt was careful to manage his public image, avoiding photographs in his wheelchair to prevent concerns about his physical capabilities. His ability to convey optimism and confidence contrasted sharply with Hoover's declining public persona during the campaign. Roosevelt's strategic appearances and speeches helped to build a connection with voters, showcasing his commitment to addressing their needs. The Interregnum Period Challenges Faced During the Transition The interregnum, the period between Roosevelt's election and inauguration, was marked by political stagnation and continued economic distress. Hoover attempted to influence Roosevelt's agenda, but Roosevelt remained non-committal, unwilling to endorse Hoover's policies. The country faced severe winter conditions and banking panics, exacerbating the economic crisis during this waiting period. Constitutional Amendments and Legislative Changes The challenges of the interregnum led to the amendment of the U.S. Constitution to shorten the time between election and inauguration to two months. This change aimed to prevent future delays in leadership during times of crisis, ensuring a smoother transition of power. Roosevelt's reluctance to engage with Hoover's policies highlighted the need for a clear and decisive leadership approach. The Assassination Attempt and Its Impact The Attempt on Roosevelt's Life On February 15, 1933, an assassination attempt was made on Roosevelt by Giuseppe Zangara, who fired six shots at him during a speech. Although Roosevelt was unharmed, the attack injured several others, including Chicago Mayor Tony Cermak, who later died from his wounds. Roosevelt's calm response to the incident helped to reassure the public of his leadership capabilities during a time of uncertainty. Public Reaction and Roosevelt's Leadership The assassination attempt solidified Roosevelt's image as a strong and composed leader, capable of handling crises. His ability to maintain poise in the face of danger resonated with the American public, further enhancing his popularity. The incident underscored the challenges Roosevelt would face as president, setting the stage for his New Deal policies. Introduction to Franklin D. Roosevelt's Presidency Context Before Taking Office Roosevelt entered office during the Great Depression, with a clear belief in positive government action to address economic issues. He aimed to restore public confidence in banks and implement stronger government regulation of the economy. Unlike his predecessor Hoover, Roosevelt was pragmatic and open to changing strategies to achieve his goals. He formed a group known as the 'Brains Trust' to help devise relief and recovery programs, including key figures like Rexford Tugwell, Raymond Moley, and Adolph Berle. Inauguration Day: A New Beginning Roosevelt's inauguration on March 4, 1933, was marked by a somber atmosphere, contrasting with his hopeful vision. He delivered a famous inaugural address, emphasizing the need for collective action against fear and economic depression. The phrase 'The only thing we have to fear is fear itself' became a rallying cry for Americans during this challenging time. The weather during the ceremony symbolized hope, with the sun breaking through clouds as he took the oath of office. The First New Deal: Legislative Actions and Goals Overview of the First New Deal The First New Deal was characterized by a wave of legislative activity aimed at relief, recovery, and reform. By the end of 1933, over fifteen significant pieces of legislation were passed, addressing various economic issues. Key goals included bank reform, job creation, economic regulation, and regional planning. Key Legislation and Its Impact The Emergency Banking Act of 1933 was a pivotal piece of legislation that aimed to stabilize the banking system. Roosevelt declared a bank holiday to prevent bank runs, leading to the reorganization of national banks. The act took the U.S. off the gold standard, allowing for increased circulation of paper money and greater federal oversight of banks. Roosevelt's Communication Strategy: Fireside Chats The Role of Fireside Chats Roosevelt utilized radio addresses, known as 'fireside chats', to communicate directly with the American public. These chats helped to build consumer confidence and reassure citizens about the government's actions. The first fireside chat occurred on March 12, 1933, just before banks reopened, explaining the government's efforts to stabilize the banking system. Impact on Public Perception The fireside chats were instrumental in changing the public's mindset from panic to confidence. Roosevelt's approachable communication style contributed to his popularity and the public's willingness to support his policies. The chats exemplified Roosevelt's understanding of media and its power to connect with citizens. Roosevelt's Communication Strategy The Fireside Chats Roosevelt's fireside chats were a series of over two dozen radio addresses aimed at directly communicating with the American public. He used simple language and a reassuring tone, likening himself to a family patriarch, which helped build trust and rapport with listeners. These chats were instrumental in explaining complex financial concepts in an accessible manner, fostering public understanding and support. An example from March 12, 1933, illustrates his approach: he emphasized the importance of public cooperation and confidence in the financial system. Roosevelt's ability to connect emotionally with the public was crucial in galvanizing support for his policies during the Great Depression. Despite his personal fear of fire due to polio, he effectively used the imagery of the hearth and home to create a comforting atmosphere. Impact on Public Perception The fireside chats significantly enhanced Roosevelt's popularity and public image as a caring leader during a time of crisis. His direct communication style contrasted sharply with the more formal and distant communication of previous presidents. By addressing the nation in a familiar and intimate setting, he was able to humanize the presidency and make it more relatable to everyday Americans. The chats also served to dispel rumors and misinformation, reinforcing his role as a trusted source of information. Roosevelt's strategic use of media set a precedent for future presidential communication, emphasizing the importance of direct engagement with the public. The emotional resonance of his speeches helped to unify the nation during a period of widespread fear and uncertainty. Legislative Actions During the First Hundred Days Key Legislation Passed Roosevelt's first hundred days in office saw the introduction of numerous bills aimed at economic stabilization and relief for the unemployed. The Emergency Banking Act was replaced by the Glass-Steagall Banking Act, which separated commercial and investment banking to prevent future financial crises. The Federal Deposit Insurance Corporation (FDIC) was established to insure personal bank deposits, restoring public confidence in the banking system. The Economy Act was enacted to reduce government spending, fulfilling a campaign promise and demonstrating fiscal responsibility. The Securities Act required corporations to provide full disclosure to the federal government, increasing transparency in financial markets. The Beer Tax was introduced as part of the repeal of Prohibition, generating revenue and stimulating the economy. Employment Initiatives Recognizing the urgent need for jobs, Roosevelt signed the Wagner-Peyser Act, establishing the United States Employment Service to support local job creation. The Federal Emergency Relief Act (FERA) allocated $500 million in direct grants to states for relief agencies, addressing immediate needs of the unemployed. The Civil Works Administration (CWA) was created to provide temporary jobs, employing millions in public works projects. The Civilian Conservation Corps (CCC) offered jobs to young men from relief families, focusing on environmental conservation and infrastructure development. The CCC became a model for future environmental initiatives and is often credited with kickstarting the modern environmental movement in the U.S. These programs exemplified Roosevelt's dual approach of providing immediate relief while also fostering long-term economic recovery. Overview of New Deal Programs Key Programs from the First New Deal Program Name Years Enacted Description Agricultural Adjustment Administration (AAA) 1933–1935 Farm program to raise agricultural profitability by reducing production Civil Works Administration (CWA) 1933–1934 Temporary job relief program providing employment Civilian Conservation Corps (CCC) 1933–1942 Employed young men in rural areas for conservation projects Federal Deposit Insurance Corporation (FDIC) 1933–today Insures private bank deposits to protect consumers Federal Emergency Relief Act 1933 Provided direct monetary relief to unemployed Americans Glass-Steagall Act 1933–1999 Separated commercial and investment banking to stabilize the financial system Long-term Impact of New Deal Legislation The Home Owners’ Refinancing Act helped homeowners avoid foreclosure by refinancing mortgages, stabilizing the housing market. The establishment of the Federal Housing Authority standardized the thirty-year mortgage, promoting post-WWII housing growth. The Emergency Farm Mortgage Act provided similar relief for farmers, ensuring agricultural stability during economic recovery. Roosevelt's New Deal programs laid the groundwork for modern social safety nets and government intervention in the economy. The legacy of these programs continues to influence American economic policy and public welfare initiatives today. The New Deal is often viewed as a pivotal moment in U.S. history, reshaping the relationship between the government and the economy. Overview of the New Deal Legislation Key Programs and Acts The Emergency Farm Mortgage Act and Farm Credit Act provided financial assistance for farm mortgages, similar to other New Deal programs. The Agricultural Adjustment Act (AAA) aimed to alleviate rural poverty by paying farmers to reduce crop production, thus increasing prices. The National Industry Recovery Act (NIRA) allowed industries to collaborate on fair competition codes, including minimum wages and price setting. Economic Context of the New Deal The Great Depression caused widespread economic hardship, with farmers facing drought in the Great Plains and low prices in the South. The AAA was a response to systemic issues in agriculture, such as overproduction and falling commodity prices, which threatened farmers' livelihoods. Roosevelt's New Deal sought to address both immediate relief and long-term economic stability through federal intervention. The Agricultural Adjustment Act (AAA) Implementation and Impact The AAA was enacted on May 12, 1933, and provided direct relief payments to farmers, totaling $4.5 million initially. Farmers were incentivized to limit production; for example, corn producers received thirty cents per bushel for corn not grown, and hog farmers received five dollars per head for hogs not raised. The program was financed through a tax on processing plants, which was passed on to consumers, leading to higher prices. Criticism and Challenges Critics argued that the AAA's approach of destroying crops to raise prices was morally questionable, especially during a time of widespread hunger. The disparity in payments between large commercial farms and small family farms led to increased suffering for tenant farmers and sharecroppers. The Southern Tenant Farmers Union (****) emerged as a response to these inequalities, advocating for the rights of disenfranchised farmers. The National Industry Recovery Act (NIRA) Goals and Structure The NIRA aimed to stabilize the economy by suspending antitrust laws and allowing industries to collaborate on fair competition codes. The National Recovery Administration (NRA) was established to enforce these codes, which included provisions for minimum wages and maximum work hours. General Hugh S. Johnson led the NRA, which created over five hundred codes for various industries, including some less relevant sectors. Public Works Administration (PWA) The PWA was created under the NIRA, allocating $3.3 billion for public works projects such as highways and federal buildings. This initiative aimed to create jobs and stimulate economic growth through infrastructure development. The PWA's projects were essential for long-term recovery, providing employment and improving public facilities. Labor Movements and Cultural Responses The Southern Tenant Farmers Union (****) The **** was an interracial organization formed to advocate for tenant farmers and sharecroppers during the Great Depression. It organized protests and strikes, successfully securing wage increases for its members despite ongoing challenges. The ****'s efforts highlighted the struggles of marginalized farmers and brought national attention to their plight. Cultural Impact of Labor Songs John Handcox, a member of the ****, used folk songs to inspire and mobilize workers, emphasizing the power of music in activism. Songs like "Roll the Union On" became anthems for labor movements, reflecting the struggles and aspirations of workers. The ****'s integration and activism were ahead of their time, challenging racial and economic inequalities in the labor movement. The Public Works Administration (PWA) Overview and Funding The PWA was allocated $3.3 billion to fund public projects, including highways, federal buildings, and military bases. Despite political challenges and underfunding issues, the PWA provided significant benefits under the National Industrial Recovery Act (NIRA). Secretary of the Interior Harold Ickes oversaw the PWA, which completed over 34,000 projects, including iconic structures like the Golden Gate Bridge and the Queens-Midtown Tunnel. Impact on Employment and Infrastructure Between 1933 and 1939, the PWA was responsible for constructing over one-third of new hospitals and 70% of new public schools in the U.S. The PWA's projects not only created jobs but also improved essential infrastructure, contributing to long-term economic recovery. Challenges and Criticisms The PWA faced political squabbles over project appropriations, leading to delays and inefficiencies. Critics pointed out the significant underfunding of public housing projects, which limited the program's overall effectiveness. The National Recovery Administration (NRA) and Labor Strikes Workers' Rights and Organizing The NRA's provision for workers' rights to organize led to increased union activity in previously unorganized industries such as oil, gas, and rubber. The rise in labor organization was met with resistance, leading to a doubling of strikes from 1932 to 1934, with over 1.5 million workers striking in 1934 alone. Notable Strikes and Violence The Auto-Lite strike in Toledo saw 10,000 workers join in solidarity, resulting in violent confrontations with strike-breakers. The Minneapolis teamsters' strike led to bloody clashes between workers and police, prompting discussions of martial law. A significant strike among 14,000 longshoremen in San Francisco culminated in a city-wide general strike, paralyzing the city and resulting in fatalities. Flaws in Roosevelt's Approach Roosevelt's relief efforts, while beneficial, did not address the underlying class inequities that left workers vulnerable to poor conditions. Critics argued that immediate relief measures failed to provide long-term solutions to systemic issues in labor and employment. The Tennessee Valley Authority (TVA) Purpose and Achievements The TVA was established to plan and develop the Tennessee Valley through flood control, reforestation, and hydroelectric power. Under David Lilienthal's leadership, the TVA constructed dams to harness the Tennessee River, providing much-needed electricity and promoting industrial growth. Educational Initiatives and Community Impact The TVA included educational programs for farmers on crop rotation, soil replenishment, and reforestation, improving agricultural practices in the region. The introduction of electricity facilitated the establishment of textile mills, providing new job opportunities, including for women. Criticism and Displacement The TVA faced criticism from families displaced by construction projects, highlighting the social costs of economic development. Initial mistrust of the TVA among local citizens reflected broader concerns about federal intervention in regional economies. Assessing the First New Deal Economic Recovery and Public Sentiment The First New Deal implemented policies that reversed the economic decline, increasing the number of working Americans from 24 to 27 million between 1933 and 1935. Roosevelt's policies provided relief to homeowners and farmers, preventing foreclosures and boosting consumer spending. The Role of Roosevelt's Advisors The success of the New Deal was attributed to the collaborative efforts of Roosevelt's advisors, known as the 'Brains Trust', who provided innovative solutions to economic challenges. The New Deal was not a singular master plan but a series of disjointed efforts aimed at addressing the Great Depression's causes. Criticism and Future Directions Despite its successes, the New Deal faced criticism for not adequately addressing the needs of women, African Americans, and Native Americans. Roosevelt's second term would see attempts to address these criticisms and further refine New Deal policies. Overview of the Second New Deal Learning Objectives Understand the criticisms of the First New Deal and how the Second New Deal addressed them. Assess the overall impact of the New Deal on various demographics, including women, African Americans, and Native Americans. Context of Roosevelt's Second Term Roosevelt won his second term in a landslide, indicating strong public support despite criticism. Critics from both the left and right emerged, with conservatives opposing government expansion and liberals demanding more assistance for the struggling populace. The Supreme Court's invalidation of key First New Deal programs prompted Roosevelt to seek court reforms. Criticism of the New Deal Conservative Criticism Conservatives viewed the New Deal as a radical shift away from free enterprise, fearing it would lead to socialism or fascism. The American Liberty League, composed of conservative Democrats, labeled the AAA as fascist and criticized New Deal programs as threats to democracy. Industrialists and wealthy Americans actively campaigned against Roosevelt's policies, undermining his popularity. Liberal Criticism Liberals felt the New Deal did not go far enough in addressing the needs of the poor and marginalized. Dr. Francis E. Townsend proposed a pension plan for the elderly, gaining significant public support. Father Charles Coughlin, initially a supporter, criticized Roosevelt for not adequately defending labor rights and monetary reform. Key Figures and Their Proposals Upton Sinclair and Huey Long Upton Sinclair ran for California governor in 1934, advocating for a progressive income tax and a pension program for the elderly. Huey Long proposed the 'Share Our Wealth' program, aiming to redistribute wealth through direct payments to families, despite its impracticality. Long's popularity surged, with over four million supporters, making him a significant political threat to Roosevelt. The Impact of Criticism on Roosevelt Roosevelt acknowledged valid criticisms of the New Deal and sought to address them in his re-election campaign. The Second New Deal was introduced in response to these criticisms, aiming to solidify support and implement more comprehensive reforms. Major Legislation of the Second New Deal The Banking Act of 1935 The Banking Act represented the most significant revision of banking laws since the Federal Reserve's establishment in 1914. A new seven-member board of governors was created to oversee regional banks, enhancing federal control over monetary policy. This reform allowed the government to borrow substantial funds to support relief and recovery programs. The Emergency Relief Appropriation Act Passed in 1935, it authorized the largest single expenditure in U.S. history at that time, totaling $4.8 billion. A significant portion of the funds was allocated to the Works Progress Administration (WPA), which provided jobs for millions. The WPA funded extensive infrastructure projects, including hospitals, schools, and roads, while also supporting the arts through Federal Project Number One. Overview of the Works Progress Administration (WPA) Federal Project Number One The WPA created Federal Project Number One, employing around 40,000 artists across various disciplines including theater, art, music, and writing. Artists produced significant cultural works such as state murals, guidebooks, concerts, and drama performances nationwide, enriching American cultural heritage. A notable example includes a mural in the Bellevue, Ohio post office, depicting industrial workers, which reflects the era's community life and labor. The project also funded the collection of oral histories, notably from formerly enslaved individuals, contributing to a deeper understanding of slave life in America. These artistic endeavors not only provided employment but also fostered a sense of community and historical documentation during the Great Depression. National Youth Administration (NYA) The NYA was part of the WPA, providing work-study jobs to over 500,000 college students and four million high school students, helping them gain work experience. This initiative aimed to alleviate youth unemployment and support education during the economic downturn. The NYA's programs included part-time jobs that allowed students to contribute to their families while pursuing their studies, thus promoting education and workforce readiness. The Second New Deal and Social Safety Nets Social Security Act Enacted in 1935, the Social Security Act established a pension fund for retired individuals, funded through payroll taxes on employees and employers. Initially, the act excluded domestic workers and farmers, disproportionately affecting women and African Americans, highlighting systemic inequalities in social welfare. The act aimed to provide financial support to the elderly, unemployed, disabled, and young, marking a significant shift in government responsibility for citizens' welfare. Wagner Act and Labor Rights The Wagner Act, also known as the National Labor Relations Act, was signed into law to protect workers' rights to unionize and bargain collectively after previous protections were lost. It established the National Labor Relations Board (NLRB) to oversee labor relations and address grievances, reinforcing workers' rights. The act received strong support from labor leaders like John L. Lewis and the Congress of Industrial Organizations, marking a pivotal moment in labor history. Despite opposition from Republicans and factory owners, the Wagner Act was upheld by the Supreme Court in 1937, solidifying its legal standing. Key Programs of the Second New Deal Overview of New Deal Legislation Program Name Years Enacted Description Fair Labor Standards Act 1938–today Established minimum wage and forty-hour workweek Farm Security Administration 1935–today Provides education and economic support for poor farmers Federal Crop Insurance Corporation 1938–today Insures crops and livestock against revenue loss National Labor Relations Act 1935–today Recognized workers' rights to unionize and bargain National Youth Administration 1935–1939 (part of WPA) Provided part-time employment for students Rural Electrification Administration 1935–today Provides public utilities to rural areas Social Security Act 1935–today Aid to retirees, unemployed, and disabled Surplus Commodities Program 1936–today Provides food assistance to the poor Works Progress Administration 1935–1943 Jobs program including artists and youth Roosevelt's Political Challenges and Economic Policies Supreme Court Packing Plan In 1936, Roosevelt faced opposition from the Supreme Court regarding his New Deal programs, prompting him to propose the Supreme Court Packing Plan. The plan aimed to expand the court by adding justices who supported his policies, which faced significant backlash from Congress and the public. Although the plan failed, it politically pressured the justices to uphold key legislation like the Wagner Act and Social Security Act. Economic Recovery and Challenges Roosevelt initially believed in a balanced budget but shifted towards increased government spending to combat the Great Depression. After re-election in 1936, he attempted to reduce spending, anticipating economic recovery, but a recession hit in 1937, leading to increased unemployment. Historians debate the causes of this recession, with some attributing it to tax fears among factory owners and others to Federal Reserve policies. Roosevelt's decision to cut spending on job relief programs like the WPA is often cited as a critical factor in the economic downturn. Economic Policies and Theories Roosevelt's Economic Decisions Roosevelt initially curtailed federal spending on job relief programs, which contributed to economic downturns during the late 1930s. Influenced by advisors like Harry Hopkins and Henry Wallace, he shifted towards Keynesian economics, advocating for deficit spending to stimulate the economy. In Spring 1938, Roosevelt requested $33 billion for emergency relief, leading to the authorization of funds for the PWA and WPA projects. The Fair Labor Standards Act Signed in Summer 1938, this act established a federal minimum wage of 45 cents per hour and a maximum workweek of 40 hours. It also prohibited child labor for those under 16, marking a significant step in labor rights during the New Deal era. This legislation was one of the last major acts of Roosevelt's presidency, which would soon be overshadowed by World War II. The Legacy of the New Deal National Power and Economic Stability The New Deal significantly increased the federal government's role in ensuring economic stability and prosperity. Historians generally view the New Deal as a success, establishing minimum standards for wages and working conditions. It helped millions retain their homes and farms, laying the groundwork for future federal programs under Truman and Johnson. Critiques and Shortcomings Critics argue that the New Deal initiated a welfare state that undermined individualism, a sentiment that gained traction during the Goldwater and Reagan eras. Despite GDP growth of 7.5% from 1934 to 1940, unemployment remained high at around 15% in 1940, indicating that not all economic issues were resolved. Environmental consequences arose from large infrastructure projects, such as the Grand Coulee Dam, which had significant ecological impacts. Racial Dynamics and the New Deal Discrimination and Inclusion The New Deal programs often excluded African Americans, with discriminatory hiring practices in federal job programs like the CCC and WPA. The AAA left many Black tenant farmers and sharecroppers without support, highlighting systemic inequalities in the New Deal's implementation. Roosevelt's administration made some efforts to improve hiring practices for African Americans, leading to increased employment in programs like the WPA. Contributions of African American Leaders Mary McLeod Bethune played a crucial role in advocating for African American rights and education as part of Roosevelt's 'Black Cabinet'. Under her leadership, the NYA's Division of Negro Affairs focused on improving literacy among African Americans, reaching over one million children. Roosevelt's presidency marked the first time a Black federal judge was appointed and the first public condemnation of lynching by a sitting president. Cultural and Social Impact The Role of Education and Literacy The New Deal's Federal Project Number One included initiatives that significantly improved literacy rates among African Americans. Bethune's efforts contributed to a shift from high illiteracy rates to a more educated Black population, fostering greater participation in society. The emphasis on education during the New Deal laid the foundation for future civil rights advancements. The Broader Social Context The Great Depression exacerbated existing racial inequalities, making the work of leaders like Bethune even more critical. Roosevelt's policies and the New Deal's legacy influenced the trajectory of race relations in America, with mixed outcomes. The New Deal's impact on African Americans is a complex narrative of both progress and persistent challenges. The Role of African Americans in the New Deal Historical Context of African American Involvement The Great Depression highlighted systemic racism and economic inequality faced by African Americans. President Franklin Roosevelt's administration included influential African American leaders, notably Mary McLeod Bethune. The establishment of the “Black Cabinet” aimed to address African American issues within the New Deal framework. Despite some advancements, many African Americans remained marginalized in employment opportunities during this period. Key Figures and Their Contributions Mary McLeod Bethune served as the Director of the Division of Negro Affairs for the NYA, advocating for Black literacy and employment. Eleanor Roosevelt's support for Bethune and other African American leaders showcased her commitment to racial justice. The WPA's employment programs, while beneficial, often failed to provide equitable opportunities for African Americans at the local level. Limitations and Challenges Roosevelt's political strategy required him to maintain support from Southern Democrats, limiting his ability to advocate for civil rights. Although he supported anti-lynching legislation, he did not push Congress to propose such laws, reflecting political constraints. The federal government made some strides in race relations, but local implementation often fell short, leaving many African Americans in poverty. Native American Rights and the New Deal The Indian Reorganization Act of 1934 The Indian Reorganization Act marked a significant shift from assimilationist policies to promoting self-governance among Native Americans. John Collier, as Commissioner of Indian Affairs, played a crucial role in advocating for Native American rights and land restoration. The act aimed to preserve Native American culture and heritage, reversing the damage caused by previous policies like the Dawes Act. Impact of the Act The act facilitated the return of nearly two million acres of land to Native tribes, although challenges remained in self-governance. Collier's efforts are viewed as a pivotal moment in improving race relations and recognizing Native American rights. Despite limitations, the act laid the groundwork for future advocacy and rights movements among Native Americans. Women's Rights and the New Deal Gender Discrimination in New Deal Programs Wage discrimination was prevalent in federal job programs, often relegating women to lower-paying positions. Relief policies encouraged women to stay home, reflecting the gender norms of the era, which limited their employment opportunities. The WPA was the first New Deal agency to hire women, focusing on widows and single women for specific projects. Influential Women in the New Deal Molly Dewson, as Director of the Women’s Division of the Democratic Party, advocated for women's rights and employment opportunities. Frances Perkins, the first female cabinet member, significantly influenced labor policies and championed the Fair Labor Standards Act. Eleanor Roosevelt emerged as a powerful advocate for social causes, using her position to promote women's rights and racial equality. The Mixed Legacy of the New Deal for Women Despite limitations, many women supported the New Deal for its direct relief and employment opportunities. Dewson's approach emphasized women's intelligence and capability, appealing to their rational decision-making. Eleanor Roosevelt's influence on her husband and her advocacy for marginalized groups marked a significant shift in political engagement for women. Conclusion: The New Deal's Lasting Impact Summary of Key Contributions The New Deal represented a complex interplay of progress and limitations for African Americans, Native Americans, and women. While some advancements were made, systemic issues of racism and gender discrimination persisted. The efforts of key figures like Bethune, Dewson, and Perkins laid the groundwork for future civil rights movements. Reflection on Historical Significance Roosevelt's administration, despite its shortcomings, acknowledged the importance of race relations and civil rights in American society. The New Deal's legacy continues to influence discussions on social justice and equality in contemporary America. Understanding this historical context is crucial for analyzing ongoing struggles for civil rights and gender equality. Eleanor Roosevelt: A Political Partner and Advocate Early Political Involvement Eleanor Roosevelt actively supported her husband, Franklin D. Roosevelt, during his political campaigns, including his unsuccessful vice-presidential bid in 1920. After FDR's polio diagnosis in 1921, Eleanor took on a more prominent role in his political life, campaigning on his behalf and becoming a key political partner. The discovery of FDR's affair with Lucy Mercer shifted their marriage dynamics from romantic to a political partnership, which lasted until FDR's death in 1945. Advocacy for Social Causes Eleanor used her position to advocate for various social issues, leveraging her public presence to promote causes that FDR could not openly support due to political constraints. She was instrumental in the establishment of Arthurdale, a resettlement community for displaced coal miners, which, despite its eventual decline, showcased her commitment to rural assistance. Eleanor's exposure to racial segregation issues in Arthurdale led her to champion civil rights causes, including lobbying for an anti-lynching bill in 1934. Breaking Racial Barriers Eleanor Roosevelt broke with tradition by inviting prominent African Americans to the White House, challenging the status quo and promoting racial equality. Her resignation from the Daughters of the American Revolution (DAR) in protest of their refusal to allow Marian Anderson to perform highlighted her commitment to civil rights. Eleanor's actions positioned her as a key figure in the civil rights movement, often advocating for policies that addressed racial discrimination in New Deal programs. The New Deal: Franklin Roosevelt's Response to the Great Depression The Rise of Franklin Roosevelt FDR's background as a wealthy and educated politician, coupled with his polio experience, made him a relatable figure during the Great Depression. His optimistic approach contrasted sharply with Herbert Hoover's policies, leading to a landslide victory in the 1932 election. The interregnum period between his election and inauguration saw worsening economic conditions, prompting FDR to prepare for immediate action upon taking office. The First New Deal Upon taking office in March 1933, FDR implemented a series of bold measures, including a bank holiday and the Emergency Banking Act to restore public confidence in the banking system. His first hundred days in office were marked by significant legislation aimed at job creation, industry stabilization, and direct relief for individuals. While not all programs were effective, they collectively helped to stabilize the economy and shift public sentiment from despair to hope. The Second New Deal Facing criticism from both the left and right, FDR pushed for a new wave of legislation after the Supreme Court struck down key New Deal programs. The Second New Deal introduced significant reforms, including the Banking Act, Emergency Relief Appropriation Act, and Social Security Act, which continue to influence American policy today. The Fair Labor Standards Act established minimum wage and maximum work hours, marking a significant advancement in labor rights. Key Terms and Concepts Important Programs and Policies Brains Trust: An advisory group that provided innovative solutions to national problems during FDR's governorship and presidency. Civilian Conservation Corps (CCC): A public program that employed young men in conservation projects, addressing unemployment and environmental issues. Social Security: A series of programs aimed at supporting vulnerable populations, including the unemployed and elderly, through pensions and aid. Tennessee Valley Authority (TVA): A federal agency focused on regional development through flood control and hydroelectric power projects. Legislative Milestones Legislation Purpose/Impact Emergency Banking Act Restored confidence in the banking system by allowing federal examination of banks before reopening. Social Security Act Established a safety net for the elderly, unemployed, and disabled, shaping future welfare policies. Fair Labor Standards Act Set minimum wage and maximum work hours, prohibiting child labor

ENV 226: Essential Ecology Final Exam Study Guide — om single-species thinking to the dynamics of many interacting ecies. A community is more even when all species have similar abundances. Diversity: A combined measure of richness and evenness. More diverse = more likely to pull multiple different species out of a 'hat'. Shannon Diversity Index (H′): The most common diversity index. Higher H′ = more diverse (high richness AND high evenness). Formula: H′ = –Σ(pᵢ · ln pᵢ), where pᵢ is the proportion of individuals in species i. Worked example If a community has 4 species, each at 25% (p = 0.25), then H′ = –[4 × (0.25 × ln 0.25)] = 1.39. If one species dominates (e.g., 70/10/10/10), evenness drops and H′ falls even though richness is the same. Why diversity matters — ecosystem function & services Ecosystem function: Biological, geochemical, and physical processes that take place within an ecosystem (e.g., productivity, nutrient cycling, decomposition, pollination). Ecosystem services: The benefits humans derive from ecosystems. Four major categories: Provisioning: food, water, timber, fiber Regulating: climate regulation, flood control, water purification Cultural: recreation, spiritual, aesthetic, educational values Supporting: soil formation, nutrient cycling, primary production How diversity affects function — mechanism Complementary resource use (niche complementarity): Different species use slightly different resources (e.g., water at different soil depths, nutrients at different times). A diverse community captures more of the available resources than any single species could, raising total productivity. Diversity–stability theory Compensation: Species respond differently to environmental fluctuations. When one species declines, another can increase and 'compensate,' keeping overall ecosystem function steady. Insurance hypothesis: A diverse community is more likely to contain at least one species with traits that help the ecosystem cope with change. Diversity acts as ecological 'insurance' against disturbance. Rules of community assembly — what determines diversity at a site Three filters act in sequence on the regional species pool to determine which species actually end up in a local community: Term Definition Dispersal Who can physically get there. Controlled by distance from source populations and by dispersal ability. Connects to the 'mass effect' / rescue effect — regional diversity (gamma) can rescue local diversity (alpha). Environmental filtering What species can tolerate the abiotic conditions (climate, soil, water, salinity). Example: Ponderosa pine will not survive in the Sonoran Desert — environmental filtering excludes it. Biotic filtering What species can coexist given interactions with other species (competition, predation, facilitation). Strongest where abiotic conditions are benign, because more species can be there to interact. Intertidal zonation paradigm — how the filters stack In rocky intertidal communities, abiotic stress (desiccation, wave action) sets the UPPER limit of a species' distribution — an environmental filter. Competition and predation set the LOWER limit — biotic filters. Take-home: environmental filtering dominates in stressful zones; biotic filtering dominates in benign zones. What maintains diversity Intermediate Disturbance Hypothesis (IDH): Diversity is highest at intermediate frequencies or intensities of disturbance. Low disturbance lets competitive dominants exclude others; high disturbance eliminates all but the most disturbance-tolerant species. The middle keeps both groups in the community. Positive species interactions (facilitation): When one species makes conditions better for another (e.g., a nurse shrub providing shade and moisture for seedlings underneath). Facilitation tends to INCREASE biodiversity, especially in stressful environments. 1.2 Succession Primary succession: Colonization of a substrate that has NEVER supported life (e.g., bare bedrock, new volcanic rock, glacial retreat). Soil must be built from scratch, typically by pioneers like lichens and mosses. Secondary succession: Recovery after a disturbance that left soil and some biological legacy behind (e.g., a cleared field, most wildfires). Much faster than primary succession because soil and seed bank persist. Pioneer species: The first species to colonize a disturbed or bare area. Typically fast-growing, high-dispersal, stress-tolerant organisms that modify the site so later-successional species can establish. Quiz-style example The Woodbury Fire burned so intensely on the Tonto NF that only bedrock remained. Recolonization of this area is PRIMARY succession — there is no soil or seed bank left to start from. 1.3 Ecological Energetics Energy: The currency of ecosystems. Most ecological energy originates from the sun as electromagnetic radiation and is stored in tissues (biomass). Trophic level: Organisms that share the same function in the food chain and the same nutritional relationship to primary sources of energy. Level 1 = producers; 2 = primary consumers (herbivores); 3 = secondary consumers (carnivores); 4+ = tertiary / apex predators. Autotroph (primary producer): An organism that produces its own food from inorganic sources — typically plants, algae, and some bacteria via photosynthesis. Consumer (heterotroph): An organism that obtains energy by consuming other organisms. Primary consumers eat producers; secondary consumers eat primary consumers; etc. Production: The rate at which new biomass is created by organisms in an ecosystem (units of mass or energy per area per time). Net primary production (NPP): Gross primary production (total photosynthesis) MINUS the energy plants use for their own respiration. NPP is what is actually available to herbivores. Assimilation and production efficiency Energy is lost at every step of the grazing food chain. Two key efficiencies describe where energy goes: Term Definition Assimilation efficiency (Energy assimilated / energy consumed) × 100%. Assimilated = consumed – egested (waste). Herbivores ≈ 20–50% (tough plant material); carnivores ≈ 80% (similar tissue chemistry). Production efficiency (Energy in new biomass / energy assimilated) × 100%. Endotherms (birds, mammals) are LOW (~1–3%) because most energy is burned as heat; ectotherms (insects, reptiles, fish) are HIGH (~10–50%). Worked example (assimilation efficiency) Eats 400 J, excretes 200 J as waste, puts 50 J into growth. Assimilated = 400 – 200 = 200 J. Assimilation efficiency = 200 / 400 = 50%. The 10% rule Roughly 10% of the energy at one trophic level is transferred to the next. The rest is lost to respiration, heat, and waste. This is WHY food chains are short (usually 4–5 links): there simply isn't enough energy left to support another level. 1.4 Food Webs A food web is many, connected food chains — a map of who eats whom across an entire community. In simple diagrams, arrows point from prey to consumer. Complex diagrams use plus/minus signs to show the direction of effect, and dashed lines to show indirect effects. Top-down control: Higher trophic levels (predators) limit the abundance of lower levels. Removing a top predator releases herbivores, which suppress plants. Bottom-up control: Lower trophic levels (nutrients, producers) limit higher levels. Adding nutrients increases plants, which increases herbivores, which increases predators. Trophic cascade: Indirect effects of a predator propagate down the food web. Classic example: wolves reintroduced to Yellowstone → elk browsing decreases → riparian willow and aspen recover → beavers return → stream ecosystems recover. 2. Ecosystems Ecosystem: A community of organisms PLUS their shared environment. Includes biotic components (plants, herbivores, carnivores, detritivores) and abiotic components (climate, soils, nutrients). 2.1 Ecological building blocks Ecological building block: An atom that (1) makes up organisms and (2) is relatively abundant. Key building blocks: C, H, O, N, P (and sometimes S) — collectively CHONP. Not building blocks: Silicon, aluminum, arsenic, tungsten — they may be abundant in the crust or used by some organisms, but are not core structural elements of life. Potassium is important biologically but is NOT a core 'ecological building block' in this course's sense. 2.2 Liebig's Law of the Minimum Growth is dictated not by the total resources available, but by the SCARCEST resource. The 'limiting nutrient' sets the ceiling on production; adding more of a non-limiting nutrient has no effect until the limit is raised. Application — nutrient pollution A coastal system receives 10 g N, 200 g P, 50 g C, and 20 g O per year as pollutants, and you know the system is N-limited. By Liebig's Law, adding MORE nitrogen is what will most change structure and function — even though phosphorus is arriving in larger quantities, it is not the limiting nutrient. 2.3 Eutrophication Eutrophication is the enrichment of an aquatic system with nutrients (especially N and P) from fertilizer runoff, wastewater, or atmospheric deposition. Process: Excess N fuels algal blooms → algae die and sink → microbial decomposition consumes oxygen → a hypoxic 'dead zone' forms → fish and invertebrates die. Once N is drawn down, the system can become P-limited; phosphorus mined for fertilizer keeps the cycle going. The Gulf of Mexico hypoxic zone is the classic example. 2.4 Nutrient cycles (N, C, P) Term Definition Nitrogen cycle N₂ in atmosphere is biologically inert. Nitrogen-fixing bacteria (free-living and in legume root nodules) convert N₂ → ammonium (NH₄⁺). Nitrification converts NH₄⁺ → nitrite → nitrate (NO₃⁻), the form most plants take up. Denitrification returns N₂ to the atmosphere. Humans roughly DOUBLED global N fixation via the Haber-Bosch process → fertilizer → eutrophication. Phosphorus cycle Largely a SEDIMENTARY cycle — no gaseous phase. P weathers from rock → soil → plants → consumers → back to soil → eventually to ocean sediments. Slow turnover at global scales; a critical component of DNA/RNA, phospholipids, bones, and ATP. Carbon cycle See dedicated section below. C moves among atmospheric, terrestrial, oceanic, and fossil pools. Photosynthesis pulls CO₂ out; respiration and combustion return it. 2.5 Ecotones and cross-ecosystem flows Ecotone: A transition zone between two ecosystems, exhibiting gradients in environmental conditions and a related shift in the composition of plant and/or animal communities (e.g., forest–grassland edge, estuary). Two factors determine how a flow of material/energy from one ecosystem affects another: Relative size of the systems — when the amount of something varies across ecosystems, the LARGER system has a bigger impact on the small system (e.g., a stream flowing into a small pond vs. into the ocean). Quality of the resource — rich subsidies (like salmon carcasses bringing ocean nutrients to streams) matter more than dilute ones. 2.6 Ecological state change & resilience Key components of ecosystems: STRUCTURE (what organisms are there and how they interact), FUNCTION (processes of energy and nutrient movement), and REGIME (which of several possible stable states the system is in). Alternative stable states: An ecosystem can exist in two or more contrasting conditions under the same environmental conditions (e.g., clear lake vs. turbid lake; forest vs. shrubland). Ecological state change (regime shift): A large, persistent, often abrupt shift in the structure and function of an ecosystem, triggered by crossing a critical threshold. Threshold / tipping point: The level of a driver (stressor) at which a system flips to a new state. Hysteresis: Once a system flips, simply reversing the driver does NOT restore the original state — the return path is different from the 'forward' path. Slow vs. fast drivers: Slow drivers (e.g., gradual warming, soil nutrient accumulation) build up until a fast driver (e.g., fire, storm) tips the system across the threshold. Perturbation: Any event (abiotic or biotic) that disturbs the ecosystem. Perturbations that cause regime change can be abiotic (fire, flood, drought) or biotic (pest outbreak, invasion). Resilience: The capacity of a system to absorb disturbance, adapt to change, and recover from adversity while maintaining its essential functions, structure, and identity. The ball-and-cup diagram Picture a ball sitting in a valley (cup) on a hilly landscape. The ball is the current state of the ecosystem; the cup is the 'basin of attraction' for that state. A disturbance pushes the ball; stabilizing (negative) feedback loops pull it back. Strong disturbance or a shrinking cup (loss of resilience) can push the ball over a hill into a NEW cup — that's state change. Negative (stabilizing) feedback loop: A change triggers a response that DAMPENS the change, keeping the system near its current state. Deepens the cup. Positive (amplifying) feedback loop: A change triggers a response that AMPLIFIES the change, pushing the system further from its current state. Flattens the cup and makes state change more likely. Applying resilience to conservation & restoration Manage for resistance — remove stressors that push the ball (exclude high-intensity grazing, reduce pollution). Manage for resilience — rebuild the 'cup' by re-establishing key species, nutrient cycling, and stabilizing feedbacks (planting perennial grasses, restoring hydrology). Passive restoration works when the seed bank, soil, and key species are still intact; active restoration is needed when the system has already crossed the threshold. 3. Landscape Ecology and Biogeography 3.1 Landscape ecology Landscape ecology: The study of spatial patterns of ecosystems and their ecological consequences — explicitly considers the arrangement of habitats across space and how organisms and materials move through them. Spatial elements Term Definition Patch A relatively homogeneous area that differs from its surroundings (e.g., a forest stand in a grassland). Generally the highest-quality habitat. Matrix The background land-cover type that surrounds patches (e.g., desert in Saguaro NP, or agricultural land around forest fragments). Corridor A linear feature connecting patches — allows movement of organisms, genes, and energy. Examples: riparian strips, hedgerows, engineered wildlife crossings (Oracle Road, Tucson). Ecotone See above — the transition zone between landscape elements. Spatial heterogeneity Variability in environmental conditions and habitat types across a landscape. Drives diversity at landscape scales. Scale dependence Ecological patterns and processes depend on the spatial/temporal scale at which they are observed (e.g., a species may look stable regionally but be declining locally). Fragmentation Fragmentation breaks a large continuous habitat into smaller, more isolated patches. Effects include: Loss of total habitat area More edge relative to interior — edge effects (different microclimate, invasives, more predators) penetrate into remaining patches Reduced connectivity — animals cannot move between patches Smaller populations in each patch → inbreeding depression, loss of genetic variability, higher extinction risk Saguaro NP example Mid-sized carnivores in Saguaro NP West crashed after a disease outbreak and never recovered. Why? The city of Tucson grew between Saguaro NP East and West, severing connectivity. No recolonization could occur from the eastern population. Solution: re-establish connectivity — the Oracle Road wildlife crossings documented over 4,400 crossings by 16 species in their first two years. Patch dynamics Patch size, shape, and connectivity change over time because of ecological processes — succession, disturbance (fire, flood, windthrow), and fragmentation — not random chance and not just geology. 3.2 Biomes and realms Biome: A large biological community defined by climate and dominant vegetation type (e.g., tropical rainforest, boreal forest, tundra, desert, savanna, temperate grassland). Biogeographic realm: A large area of the Earth's surface with a distinctive assemblage of taxa, reflecting shared evolutionary history (e.g., Nearctic, Neotropical, Palearctic, Afrotropical, Indomalayan, Australasian, Oceanic, Antarctic). Factors shaping where biomes are found: temperature and precipitation (the primary controls), seasonality, latitude, elevation, continental geography, and evolutionary history. Realms reflect plate tectonics — Pangaea split into Laurasia and Gondwana, then into the continents we have today, producing unique evolutionary trajectories in each realm (e.g., Australia's marsupials, Madagascar's lemurs). 3.3 Island Biogeography and the SLOSS debate MacArthur & Wilson's Theory of Island Biogeography: species richness on an island is set by the balance between the colonization rate (immigration) and the extinction rate. Size effect — larger islands have LOWER extinction rates (bigger populations). Distance effect — islands closer to the mainland have HIGHER colonization rates. Equilibrium species number occurs where colonization and extinction curves INTERSECT. SLOSS debate — Single Large Or Several Small? Originally framed: is a single large reserve or several small reserves of equal total area better for biodiversity? Large favors: lower extinction, room for interior species, bigger populations, full food webs. Several small favors: replication (insurance against one disaster), sampling more habitat types, potentially higher total diversity. Modern answer: it depends — on species' dispersal, the matrix, and whether you value diversity vs. viability. Connectivity (corridors) often matters more than the large/small question alone. Source population: Produces more offspring than can be supported locally — exports individuals to other patches. Population growth rate > 0. Sink population: Organisms arrive but do not reproduce enough to sustain the local population; persists only via immigration from sources. Population growth rate < 0. 4. Extinction and Climate 4.1 The 'Big Five' mass extinctions Term Definition Ordovician–Silurian (~439 Mya) ~85% marine species lost. Cause: rapid glaciation and sea-level drop, then warming. Late Devonian (~364 Mya) Prolonged event; major loss of marine invertebrates, especially reef builders. Probable causes include ocean anoxia and climate change. Permian–Triassic (~251 Mya) 'The Great Dying' — ~96% marine species and ~70% terrestrial vertebrates. THE most severe. Cause: Siberian Traps volcanism → CO₂ spike → warming, ocean acidification, and anoxia. Recovery took 5–10 million years. End Triassic (~199–214 Mya) ~50% of species lost; cleared the way for dinosaurs to dominate. Likely cause: CAMP volcanism and climate change. Cretaceous–Tertiary (K-Pg, ~65 Mya) ~76% of species, including non-avian dinosaurs. Cause: Chicxulub asteroid impact (plus Deccan Traps volcanism) → darkened skies, cooling, then warming. Why scientists are concerned now Current extinction rates are 100–1000× background rates — comparable to mass-extinction levels. Rate of change: current climate change is occurring more rapidly than almost any past episode — faster than many species can adapt or track. Humans have built roads, cities, and agricultural landscapes that BLOCK the range shifts species would otherwise use to follow their climate. Human societies are themselves adapted to current climate (agriculture, supply chains, coastlines) — disruption drives conflict. 4.2 Why climate change affects ecological systems Temperature, precipitation, seasonality, and extreme events all drive the distribution and performance of every species. Shifting climate disrupts energy balance, water balance, food availability, and reproduction; changes the timing of seasonal events; and alters disturbance regimes (fire, floods, storms). All of these cascade through communities and ecosystems. 5. Climate Change — Ecology, Climate, and the Carbon Cycle 5.1 The carbon cycle Term Definition Pool (reservoir) A place where carbon is stored and from which it can be released. Measured as a quantity (e.g., gigatons). Flux The amount of carbon exchanged between pools per unit time (gigatons/year). Measures MOVEMENT. Sink A pool that accumulates more carbon than it releases — net REMOVER of carbon from the active cycle. Source A pool that releases more carbon than it accumulates — net ADDER of carbon to the active cycle. Biggest/smallest pools & fluxes Major carbon pools (approximate, gigatons): Deep ocean: ~37,000 GtC — BY FAR the largest pool Fossil pool (oil, gas, coal): ~10,000 GtC — second largest Reactive ocean sediments: ~6,000 GtC Soils: ~2,300 GtC Surface ocean: ~1,000 GtC Atmosphere: ~800 GtC — this is the pool that drives climate Plant biomass: ~550 GtC (the largest LIVING pool) Major fluxes are photosynthesis and respiration (~120 GtC/yr terrestrial; ~90 GtC/yr ocean), which are normally nearly balanced. Fossil-fuel combustion and deforestation are the (smaller but crucial) fluxes currently unbalancing the system. Why atmospheric CO₂ is increasing Humans are burning fossil fuels — moving carbon from a long-term sink (the fossil pool) into the active atmospheric pool faster than natural sinks can remove it. Deforestation and land-use change also shift carbon from plant biomass and soils to the atmosphere. The balanced photosynthesis/respiration fluxes cannot keep up with the ~10 GtC/yr added by human activity. 5.2 Ocean acidification As atmospheric CO₂ rises, more CO₂ dissolves into the ocean. The chemistry: Step 1: The ocean is slightly alkaline; CO₂ is slightly acidic, so CO₂ dissolves into seawater. Step 2: CO₂ + H₂O → H₂CO₃ (carbonic acid). Step 3: H₂CO₃ dissociates → HCO₃⁻ (bicarbonate) + H⁺. Step 4: Some HCO₃⁻ dissociates → CO₃²⁻ (carbonate) + H⁺. Step 5: Bicarbonate and carbonate exist in equilibrium. Net result: more H⁺ ions → lower pH = acidification. Acidification also reduces carbonate availability, making it harder for corals, shellfish, and plankton to build calcium-carbonate skeletons. Warming and the ocean's ability to sequester carbon Warmer water holds LESS dissolved CO₂ (inverse solubility). As oceans warm, their ability to absorb atmospheric CO₂ decreases — a positive feedback loop that further increases atmospheric CO₂ and warming. 5.3 Important climate feedback loops Term Definition Ice-albedo feedback (POSITIVE) Warming melts polar ice → darker ocean/land replaces reflective white ice → lower albedo, more solar energy absorbed → more warming → more melting. Water vapor feedback (POSITIVE) Warming increases evaporation; water vapor is a greenhouse gas → more warming → more evaporation. Permafrost/methane feedback (POSITIVE) Thawing permafrost releases CO₂ and CH₄ long locked in frozen soils → more warming → more thawing. CO₂ fertilization (NEGATIVE, partially) Higher CO₂ can boost plant photosynthesis, pulling more C out of the atmosphere. Partially counteracts warming but is limited by water, nutrients, and heat stress. Ocean solubility feedback (POSITIVE) Warmer oceans hold less CO₂ → more stays in the atmosphere → more warming. Quiz-style example Melting polar ice caps → decreased albedo → further warming = POSITIVE feedback loop (amplifies the original change). 5.4 Factors affecting Earth's surface temperature Three major controls: Energy arriving from the sun (solar radiation) Earth's albedo — how much of that energy is reflected back to space Greenhouse gases in the atmosphere — how much outgoing infrared is trapped Carbon dioxide is the LARGEST driver of current human-caused climate change (sheer volume, long atmospheric lifetime). Methane is more potent per molecule but far less abundant; water vapor amplifies change via feedback but is not itself a primary driver. 6. Climate Change — Ecological and Human Response 6.1 How climate change affects plants and animals Climate change disrupts performance in three main ways: Term Definition Energy balance Plants: respiration rates rise faster than photosynthesis with warming — net carbon gain (and growth) drops. Animals: thermoregulation costs rise; outside the thermal neutral zone, organisms burn more energy just to stay alive. Water balance Warmer temperatures and higher vapor-pressure deficit mean plants LOSE more water per unit of photosynthesis. Animals face greater dehydration risk; aquatic species face altered hydrology. Food acquisition & reproduction Changed phenology, drought, and heat reduce the resources available for growth and reproduction. Fewer seeds, fewer offspring, lower survival. Examples of species already affected Term Definition Pika Small alpine mammal restricted to cold, rocky talus. Warming pushes them to higher elevations — eventually they 'run out of mountain.' Already extirpated from lower-elevation sites in the Great Basin. Tuatara Reptile with temperature-dependent sex determination. Warming skews sex ratios toward males, threatening population persistence. Wolverine Depends on persistent spring snowpack for denning. Declining snowpack reduces suitable reproductive habitat. 6.2 Responses of species: MOVE, ADAPT, or DIE Move: shift range poleward or upslope to track suitable climate (classic response). Range shifts are highly variable across species — depends on dispersal ability, habitat specificity, and whether barriers (cities, roads, water bodies) intervene. Adapt: through plasticity (phenotypic change within a lifetime) or evolutionary change (genetic change across generations). Long-lived species with small populations adapt slowly. Die: local extirpation or global extinction if neither option is available fast enough. 6.3 Phenology Phenology: The timing of recurring biological events — bud burst, flowering, migration, breeding, hibernation. Climate change is advancing many spring phenological events (earlier bloom, earlier migration). Phenological mismatch occurs when interacting species shift their timing differently — e.g., a migratory bird arrives after its caterpillar prey has already peaked. Mismatches cascade through food webs. 6.4 Characteristics of climate-vulnerable species Narrow thermal tolerance (specialists) Poor dispersal ability (can't move to new climate) Long generation time, low reproductive rate (slow to adapt) Small, fragmented populations (low genetic variation, high stochastic risk) Dependence on climate-sensitive habitats (snowpack, sea ice, coral reefs, alpine tundra) Narrow geographic range, especially on islands or mountain tops (nowhere to go) Tightly tied to a specific phenological window or species interaction 6.5 Why current climate change is especially damaging Rate — change is occurring faster than most species can adapt or move Barriers — human land use has fragmented habitat, blocking the range shifts species used during past climate changes Cumulative stressors — climate change interacts with pollution, invasive species, overharvest, and habitat loss Interconnected systems — ecosystems, human agriculture, and global supply chains are all calibrated to current conditions 6.6 Mitigation vs. Adaptation Term Definition Climate MITIGATION Actions that reduce the magnitude of climate change itself — typically by lowering atmospheric greenhouse gases. Examples: switching to renewables, reforestation (sequestering carbon), reducing fossil-fuel use, more efficient buildings and transport. Climate ADAPTATION Actions that help humans and ecosystems COPE with the climate change that is already happening / unavoidable. Examples: creating migration corridors, building climate-resilient ecosystems through forest thinning, adjusting USDA seed zones, changing crop choices, updating hunting/fishing regulations, designing for sea-level rise. Quick quiz check Planting trees to sequester carbon = MITIGATION (reduces atmospheric CO₂). Thinning Southwest forests to make them more fire-resilient = ADAPTATION (copes with changing fire regime). Geoengineering proposals like stratospheric aerosol injection = a controversial form of mitigation (reduces incoming solar energy). Special cases of adaptation Managed (assisted) relocation: Actively moving species to areas outside their current range that are projected to become climatically suitable. Benefits: may be the only option for species that cannot disperse fast enough; can save species from extinction. Risks: recipient communities may experience novel interactions; potential to create invasive species; ethical questions about intervention. Assisted evolution: Human intervention to increase the rate of evolutionary adaptation — e.g., selective breeding for heat tolerance, or hybridization with warm-adapted populations. Benefits: keeps species in place; works for species that cannot move. Risks: may reduce genetic diversity; unintended consequences; can go wrong (outbreeding depression). 6.7 Corridors, climate refugia, and conservation design Climate refugium: A location whose physical or biological features allow species to persist despite regional climate change — e.g., high-elevation cool pockets, deep canyons, shaded slopes, coastal fog zones. Incorporating corridors (to enable range shifts) and refugia (places species can hold on) into reserve design is essential for climate-integrated conservation. A high-elevation forest that remains cool despite regional warming can serve as a seed source for recolonization — that's the textbook example of a refugium supporting resilience. Final thoughts: making an argument about climate-integrated conservation You should be able to give your own opinion on climate-integrated conservation and defend it. A solid answer acknowledges trade-offs: traditional 'protect what is there' approaches may fail under rapid change, but aggressive interventions (managed relocation, assisted evolution) carry real risks. Most conservation scientists argue for a portfolio approach — protect refugia, build corridors, and use active interventions only where the alternative is extinctionl

l 8 condences gratitous cintracts reduced

Disaster Management & Risk Reduction: Philippine Laws

Chemistry: Acid-Base, Equilibrium, and Oxidation-Reduction Key Concepts

oxidation-reduction reactions

Reagan's Reduction of Big Government

: Systems Engineering – Unit 3 Revision Study Guide Electrical & Energy Systems 1. The Engineering Process & Systems Thinking 1.1 The Engineering Process Stages You must know the sequence and purpose of each stage: 1. Investigate & design 2. Plan 3. Produce a solution 4. Test and diagnose 5. Evaluate and report 6. Modify and improve Once a system is built, the next stage is always “Test and diagnose”. 1.2 IPO Diagrams (Input–Process–Output) Used to analyse and explain systems. Example: Home Security Alarm • Inputs: Motion sensors, door switches, keypad input • Process: Microcontroller compares input to programmed logic • Outputs: Alarm siren, alert light, SMS notification Be ready to label inputs, processes, and outputs clearly. 2. Energy Sources & Sustainability 2.1 Renewable vs Non-Renewable • Renewable: Solar, wind, hydro, tidal, biomass, geothermal • Non-renewable: Coal, oil, gas, nuclear (alternative but not renewable) Geothermal energy comes from heated groundwater. 2.2 Advantages & Disadvantages (Exam Favourite) Wind Power – Advantages • Renewable • Zero greenhouse emissions during operation • Low operating cost • Scalable • Reduces fossil fuel dependence Coal Power – Disadvantages • High CO₂ emissions • Non-renewable • Air pollution • Thermal inefficiency • Environmental damage You will be asked to: • Compare energy sources • Justify one over another • Give an opinion with reasoning 3. Energy Transformations Know energy chains in order: Examples • Wind turbine: Kinetic → Mechanical → Electrical • Hydro power: Potential → Kinetic → Mechanical → Electrical • Solar PV: Radiant → Electrical 4. Efficiency Calculations HIGH PRIORITY 4.1 Formula Efficiency= Useful output energy Total input energy × 100% 4.2 Combined Efficiency Multiply efficiencies as decimals: Example: • Solar panel: 40% → 0.40 • Battery: 80% → 0.80 0.40 × 0.80 = 0.32 = 32% Combined efficiency = 32% 5. Electrical Fundamentals 5.1 Current Types • AC (Alternating Current): Household power, wind turbines • DC (Direct Current): Batteries, solar panels 5.2 Frequency & Period 1 𝑓 = 𝑇 • Australia mains electricity = 50 Hz • Direction changes 50 times per second Example: • Period = 0.005 s 𝑓 = 1 ÷ 0.005 = 200 Hz 6. Power, Work & Energy Calculations 6.1 Power 𝑊 𝑃 = or𝑃 = 𝑉 × 𝐼 𝑡 Example: • 1,000,000 J in 50 s 𝑃 = 1,000,000 ÷ 50 = 20,000 W 6.2 Work 𝑊 = 𝐹 × 𝑑 Example: • 2000 N × 10 m = 20,000 J 7. Batteries & Electrical Storage 7.1 Series vs Parallel • Series: Voltage adds • Parallel: Capacity (Ah) adds Example: • 4 × 12 V batteries in series = 48 V 7.2 Battery Runtime Total energy Time (h)= Power of load 8. Circuit Theory 8.1 Ohm’s Law 𝑉 = 𝐼 × 𝑅 8.2 Resistance • Series: 𝑅𝑇 = 𝑅1 + 𝑅2 + 𝑅3 • Parallel: 1 1 1 = + 𝑅𝑇 𝑅1 𝑅2 8.3 Capacitors • Series: inverse rule • Parallel: add values directly 9. Electrical Components & Symbols You must identify: • Resistor • Variable resistor (potentiometer) • Capacitor • Cell / Battery • LDR (light-dependent resistor) • LED • Diode • Thermistor • Switch types: SPST, SPDT, DPDT LED does not detect light LDR, phototransistor do 10. Transformers Formula 𝑉 𝑠 𝑁 𝑠 = 𝑉 𝑝 𝑁 𝑝 Example: • 40 primary, 800 secondary • Input = 240 V 𝑉 𝑠 = 240 × (800 ÷ 40) = 4800𝑉 Used to step up voltage → reduce current → reduce power loss 11. Power Transmission Why Voltage Is Stepped-Up • Reduces current • Minimises power loss as heat • Improves efficiency • Allows thinner cables • Enables long-distance transmission 12. Power Electronics Rectifier • Converts AC to DC H-Bridge + PWM • Technique: Pulse Width Modulation (PWM) • Purpose: Convert DC into simulated AC & control motor speed 13. Semiconductors • Doping: Adding impurities to silicon • Creates diodes and transistors • Enables controlled current flow 14. Safety & Standards Before using 230 V power tools: Must have a current electrical safety tag 15

ajective clauses and reductions

how the occurences of an earthquake can be reduced

Reducing prejudice and discrimination

Lecture 9 (Redox, Reduction Potentials & Electron Carriers)

wk3 - complexity class NP & Karp reductions

Lab Quiz 7: API 20 E, Catalase, and Nitrate Reduction

VHS Study Guide Psychology WEEK 1: Psychology as a Science The goal of this week is to distinguish between "Pop Psychology" (myths) and "Empirical Science" (facts). 1. The Philosophical Roots & "Big Names" Wilhelm Wundt: Established the first psychology lab (1879). He used Structuralism, trying to map the "structure" of the mind through Introspection (having subjects report every tiny sensation they felt). Sigmund Freud: Founded Psychoanalysis. He believed behavior is driven by the Unconscious mind and childhood traumas. He used dream analysis and "free association." Behaviorism (Watson & Skinner): They rejected Freud. They argued psychology must be an Empirical Science, meaning we only study what we can see and measure. Watson: Famous for the "Little Albert" study (fear conditioning). Skinner: Focused on how rewards/punishments shape behavior (Operant Conditioning). Ivan Pavlov: A physiologist who discovered Classical Conditioning (associating a neutral stimulus, like a bell, with a natural reflex, like drooling). Maslow’s Hierarchy of Needs: A Humanist theory. It’s a pyramid starting with basic survival (food/water) and moving up to Self-actualization (reaching your full potential). 2. The "Brain Traps" (Critical Thinking & Myths) Word-of-Mouth: We believe things just because we’ve heard them a lot (e.g., "We only use 10% of our brain"—FALSE). Desire for Easy Answers: People prefer a "quick fix" (like a 5-minute cure for anxiety) over complex scientific reality. Selective Perception: We only notice things that confirm our existing beliefs. Post Hoc, Ergo Propter Hoc: "After this, therefore because of this." The logical error of assuming that because Event B followed Event A, Event A must have caused it. Inferring Causation from Correlation: The most common exam trap. Just because two variables move together (like heat and crime), it doesn't mean one causes the other. Reasoning by Representativeness: Stereotyping. Thinking a person "looks like" a certain role, so they must be that role (the "Finance Bro" vest example). WEEK 2: Scientific Inquiry and Research This is the "How-To" of psychology. You need to know the difference between just watching people and running a real experiment. 1. Research Methods Naturalistic Observation: Watching subjects in their natural habitat without interfering. High "real world" accuracy, but you have zero control. Case Study (Clinical): An intensive, detailed look at one unique individual (e.g., a person with a rare brain injury). Great for detail, but you can't apply the results to everyone. Archival Research: Looking at old records, newspapers, or medical files to find patterns. Longitudinal vs. Cross-Sectional: Longitudinal: Following the same group of people for 20+ years. (Expensive, but shows true change). Cross-Sectional: Comparing different ages at the same time (e.g., testing 10-year-olds and 50-year-olds today). 2. The Experimental Design (The "Gold Standard") Inductive vs. Deductive: Inductive: Starting with observations $\rightarrow$ forming a theory (Bottom-up). Deductive: Starting with a theory $\rightarrow$ testing it with an experiment (Top-down). Independent Variable (IV): The variable the researcher manipulates (The "Cause"). Dependent Variable (DV): The variable being measured (The "Effect"). Control vs. Experimental Group: The experimental group gets the "treatment"; the control group gets a placebo or nothing. Random Assignment: Every participant has an equal chance of being in either group. This prevents Bias. Single-Blind vs. Double-Blind: Single: Participants don't know which group they are in. Double: Neither the participants nor the researchers know. This prevents the researcher from accidentally giving "cues." WEEK 3: Biology and Behavior The "Hardware" section. How the physical brain creates the "Pink Slime" experience. 1. The Nervous System Map Central (CNS): Brain and Spinal Cord. Peripheral (PNS): Everything else. Somatic: Voluntary movements (walking). Autonomic: Involuntary (heartbeat). Sympathetic: "Fight or Flight" (Eyes dilate, heart speeds up, digestion stops). Parasympathetic: "Rest and Digest" (Calms the body down). 2. The Neuron (The Building Block) Dendrites: Receive messages. Soma (Cell Body): Process info. Axon: Sends the electrical signal. Myelin Sheath: Fatty tissue that speeds up the signal. Synapse: The tiny gap between neurons where chemicals travel. Neurotransmitters: Agonist: A chemical that mimics a neurotransmitter (enhances the effect). Antagonist: A chemical that blocks a neurotransmitter. 3. Brain Tools & Anatomy EEG: Measures electrical brain waves (good for sleep studies). MRI vs. fMRI: MRI shows structure (a picture); fMRI shows function (where blood is flowing). PET Scan: Uses radioactive "tracer" sugar to see which parts of the brain are active. The Endocrine System: Uses Hormones (slow-acting chemicals) released into the bloodstream by Glands (like the Adrenal or Pituitary). 4. The "Hidden" Biological Details (Week 3) Refractory Period: After a neuron fires, it needs a tiny "recharge" break before it can fire again. Think of it like a camera flash or a toilet flushing—you can't do it twice in a split second. Broca’s Area vs. Wernicke’s Area: * Broca’s: Controls Speech Production (Frontal Lobe). If damaged, you know what you want to say but can't get the words out. Wernicke’s: Controls Language Comprehension (Temporal Lobe). If damaged, you can speak, but it's "word salad"—it makes no sense. WEEK 4: Consciousness Consciousness is your awareness of yourself and your environment. It’s not an "on/off" switch; it’s a spectrum. 1. Processing Levels Conscious Processing: Tasks that require focused attention (e.g., learning a new TikTok dance or solving a math problem). Automatic Processing: Tasks we do "without thinking" once they are learned (e.g., walking or an experienced driver steering a car). 2. Altered States Hypnosis: A state of extreme self-suggestion where a person is highly open to direction. Meditation: A practice of focused attention to achieve mental clarity and emotional calm. Daydreaming: A shift in attention away from the current task toward internal thoughts and "mental movies." 3. Psychoactive Drugs (The "Drug Cabinet") Depressants (Alcohol, Barbiturates): Slow down the Central Nervous System (CNS). They decrease heart rate and reaction time. Stimulants (Caffeine, Nicotine, Cocaine, ADHD meds): Speed up the CNS. They increase heart rate and energy. Opiates (Heroin, Morphine, Vicodin): Specifically target pain receptors. They mimic Endorphins to stop pain and create euphoria. Hallucinogens (LSD, Marijuana, Psilocybin): Distort perceptions and evoke sensory images in the absence of sensory input. WEEK 5: Sleep and Dreams Sleep is a biological necessity, not a luxury. Your brain is incredibly active during this "downtime." 1. Stages of Sleep (The Cycle) Stage 1 (NREM-1): Light sleep. You might experience "hypnagogic sensations" (feeling like you are falling). Stage 2 (NREM-2): Deep relaxation. Characterized by Sleep Spindles (bursts of rapid brain activity). Stage 3 & 4 (NREM-3): Deepest sleep. This is when the body repairs itself. If you wake up here, you’ll feel very groggy. REM (Rapid Eye Movement): The "Dream Stage." Your brain waves look like you are awake, but your motor cortex is blocked—meaning your body is paralyzed so you don't act out your dreams. 2. Dream Theories (Why do we dream?) Freud’s Wish Fulfillment: Dreams are a "safety valve" for unacceptable feelings. Manifest Content: The actual storyline of the dream (e.g., being chased by a giant Pink Slime). Latent Content: The hidden psychological meaning (e.g., you are running away from your final exam stress). Activation-Synthesis: The brain's attempt to make sense of random neural static. The brain "synthesizes" a story from random "activation." Information Processing: Dreams help us sort out the day's events and consolidate memories. Threat Simulation Theory: Dreaming allows us to "practice" surviving dangerous situations in a safe environment. WEEK 6: Thinking and Processing This is about "Cognition"—how we use our "Pink Slime" to solve problems and make decisions. 1. Building Blocks of Thought Concepts: Mental groupings of similar objects (e.g., the concept of "Dogs"). Prototype: The best example of a category. (If I say "Bird," you probably think of a Robin, not a Penguin. The Robin is your prototype). Schemata (Schema): A mental framework that helps us organize and interpret information (e.g., your "School Schema" includes desks, teachers, and bells). 2. Problem-Solving Tactics Trial-and-Error: Trying random solutions until one works. (Slow and inefficient). Algorithms: A step-by-step, logical rule that guarantees a solution. (e.g., a math formula or checking every single aisle in a store to find milk). Heuristics: A mental shortcut or "rule of thumb." It's faster than an algorithm but can lead to errors. (e.g., looking at the signs above the aisles to find the milk). 3. The Biases (Why we make mistakes) Confirmation Bias: Searching for information that supports our preconceptions and ignoring everything else. Hindsight Bias: After an event occurs, believing we "knew it all along." Anchoring Bias: Getting "stuck" on the very first piece of information offered. (e.g., if a shirt is "on sale" for $50 down from $100, you think $50 is a deal, even if the shirt is only worth $10). Availability Heuristic: Estimating the likelihood of events based on how easily they come to mind. (e.g., being afraid of a plane crash because you saw one on the news, even though car crashes are more common). Mental Set: The tendency to approach a problem in one particular way, often a way that has worked in the past but may not work now. WEEK 7: Memory Memory is the persistence of learning over time. 1. The Three Stages of Memory Encoding: Getting information into our brain. Semantic Encoding: Encoding the meaning of words (Deepest processing). Visual Encoding: Encoding images. Acoustic Encoding: Encoding sounds. Storage: Retaining that information. Retrieval: Getting the information back out. 2. Types of Storage Short-Term Memory (STM): Holds about 7 items (plus or minus 2) for about 20 seconds. Long-Term Memory (LTM): Unlimited capacity and can last a lifetime. Explicit (Declarative): Facts and experiences (Semantic = facts; Episodic = your life stories). Implicit (Procedural): Skills (like riding a bike or typing). 3. Memory Sins & Failures Schacter’s Seven Sins: Includes Transience (fading over time), Absent-mindedness (forgetting your keys), and Persistence (unwanted memories that won't go away). Amnesia: Anterograde: You can't form new memories. Retrograde: You can't remember the past. 4. Enhancement Techniques Chunking: Organizing items into familiar, manageable units. Spaced Repetition: Studying small amounts over a long time rather than cramming. Mnemonic Devices: Memory aids like "PEMDAS" for math. 5. The "Subtle" Memory Sins (Week 7) The Serial Position Effect: You are most likely to remember the beginning of a list (Primacy Effect) and the end of a list (Recency Effect), but you’ll probably forget the middle. Pro-Tip: This is why you should study the "middle" weeks (Week 4, 5, 6) extra hard! Misinformation Effect: This is why eyewitness testimony is shaky. If someone asks, "How fast was the car going when it smashed into the pole?" you will remember the car going faster than if they said "hit." WEEK 8: Lifespan Development Developmental psychology examines how we change physically, cognitively, and socially from "womb to tomb." 1. Cognitive Development (Jean Piaget) Piaget believed children think differently than adults and move through four stages: Sensorimotor (0–2 years): Exploring the world through senses. Key milestone: Object Permanence (realizing things still exist even if you can't see them). Preoperational (2–7 years): Symbolic thought (make-believe) but lacks logic. Key trait: Egocentrism (thinking everyone sees the world exactly as they do). Concrete Operational (7–11 years): Logical thinking about physical objects. Key milestone: Conservation (understanding that volume stays the same even if the shape of the glass changes). Formal Operational (12+ years): Abstract reasoning and hypothetical "what if" thinking. 2. Psychosocial Development (Erik Erikson) Erikson focused on "crises" we face at each age. Trust vs. Mistrust (Infancy): Is the world safe? Identity vs. Role Confusion (Adolescence): "Who am I?" (This is the most common exam question). Integrity vs. Despair (Late Adulthood): Looking back on life with satisfaction or regret. 3. Moral Development (Lawrence Kohlberg) Pre-conventional: Doing the right thing to avoid punishment or get a reward. Conventional: Doing the right thing because it's the law or to fit in. Post-conventional: Doing the right thing based on universal ethical principles (even if it breaks the law). 4. Parenting Styles Authoritative: High warmth, high rules. (The "Goldilocks" style—best outcomes). Authoritarian: Low warmth, high rules. ("Because I said so!"). Permissive: High warmth, low rules. (More like a friend than a parent). Uninvolved: Low warmth, low rules. (Neglectful). WEEK 9: Learning Learning is a relatively permanent change in behavior due to experience. 1. Classical Conditioning (Ivan Pavlov) Learning by association (connecting two stimuli). Unconditioned Stimulus (UCS): The natural trigger (Food). Unconditioned Response (UCR): The natural reflex (Drooling for food). Neutral Stimulus (NS): A trigger that means nothing yet (A Bell). Conditioned Stimulus (CS): The bell after it has been paired with food. Conditioned Response (CR): Drooling for the bell alone. 2. Operant Conditioning (B.F. Skinner) Learning by consequences (Rewards and Punishments). Positive Reinforcement: Adding something good to increase behavior (A gold star for working). Negative Reinforcement: Removing something bad to increase behavior (The car stops beeping when you buckle your seatbelt). Positive Punishment: Adding something bad to stop behavior (A speeding ticket). Negative Punishment: Taking away something good to stop behavior (Taking away your phone). 3. Observational Learning (Albert Bandura) Learning by watching others. Famous study: The Bobo Doll Experiment, where kids imitated adults punching a doll. 4. The "Fine Print" of Learning (Week 9) Spontaneous Recovery: After a behavior has been "extinct" (gone away) for a while, it suddenly reappears out of nowhere. (Like Pavlov's dog suddenly drooling at a bell weeks after he stopped). Generalization vs. Discrimination: Generalization: Fearing all dogs because one bit you. Discrimination: Only fearing the specific dog that bit you. WEEK 10: Social Influences This is the study of how the "situation" and "group" overpower the individual. 1. The Stanford Prison Experiment (Zimbardo) Demonstrated the power of Social Roles and Scripts. Ordinary students became abusive "guards" or submissive "prisoners" simply because of the role they were assigned. 2. Influence & Conformity Normative Social Influence: Conforming to fit in and be liked (Dressing like your friends). Informational Social Influence: Conforming because you think the group has more info than you (Following the crowd in a new city). Obedience (Milgram): Following orders from an authority figure, even if it hurts someone else. 3. Group Dynamics Social Loafing: Working less hard in a group than when alone (The "Billy" effect). Deindividuation: Losing self-awareness and self-restraint in a large crowd or behind an anonymous screen. Group Polarization: When group discussion leads to more extreme opinions. Bystander Effect: People are less likely to help if others are around due to a Diffusion of Responsibility. 4. Thinking Patterns Fundamental Attribution Error: Blaming someone's personality for their behavior while ignoring the situation. Cognitive Dissonance: The "icky" feeling when our actions don't match our beliefs (e.g., you hate lying, but you just lied to your mom). We usually change our beliefs to match our actions to feel better. 5. Social Psych "Secret" Terms (Week 10) Self-Serving Bias: When we succeed, we take the credit ("I'm a genius"). When we fail, we blame the situation ("The test was unfair"). Foot-in-the-Door vs. Door-in-the-Face: Foot-in-the-Door: Ask for something tiny first, then the big thing. Door-in-the-Face: Ask for something HUGE (get rejected), then ask for the smaller thing you actually wanted. They are more likely to say yes because it feels like a "compromise." WEEK 11: Multiculturalism & Diversity This is the study of how culture, identity, and group values shape our behavior and how we interact with others. 1. Cultural Values Individualism: Cultures that value personal independence and "Me" goals (e.g., USA). Success is based on personal achievement. Collectivism: Cultures that value group harmony and "We" goals (e.g., Latin America, Asia). Success is based on doing what is best for the family or community. 2. Acculturation (How we adapt to new cultures) Integration: The "Best of Both Worlds." Keeping your original culture while participating in the new one. Assimilation: Giving up your original identity to fully "blend in" with the new culture. Separation: Keeping your original culture and avoiding the new one. Marginalization: Feeling like you don't belong to either culture (The "lonely" state). 3. Metaphors for Society The Melting Pot: The old idea that everyone should blend together and lose their differences to become one "American" identity. The Salad Bowl: The newer idea where cultures live together but stay distinct. You can see the "tomatoes" and the "lettuce"—everyone keeps their unique flavor. 4. Social Barriers Microaggressions: Small, daily slights or "backhanded compliments" toward marginalized groups (e.g., "You’re so articulate for someone from your neighborhood"). Prejudice vs. Discrimination: Prejudice is the thought/feeling (pre-judging), while Discrimination is the action (treating someone differently). WEEK 12: Stress & Health This is the study of how our brain's "appraisal" of the world affects our physical and mental health. 1. The Appraisal Process (Lazarus) Primary Appraisal: Judging if a stressor is a Threat (harmful) or a Challenge (potential for growth). Secondary Appraisal: Evaluating your tools. "Do I have the resources to handle this?" If yes, stress stays low. If no, panic sets in. 2. The Body’s Response (Selye’s GAS) General Adaptation Syndrome (GAS): The three stages of how your body reacts to stress: Alarm: Fight-or-Flight. Heart races, adrenaline hits. Resistance: Staying on "high alert" to cope. This is where you grind through the week. Exhaustion: Your battery dies. Your immune system crashes, and you get sick (The Cohen Cold Study). 3. Types of Stress Eustress: "Good stress." The kind that motivates you to finish a project or perform well in a game. Distress: "Bad stress." Chronic pressure that leads to burnout, fatigue, and health problems. 4. Coping Strategies Problem-Focused Coping: Attacking the problem directly. (Example: Time-Blocking your homework so it isn't overwhelming). Emotion-Focused Coping: Managing the feelings. (Example: Going to the Gym or meditating to stop feeling anxious). 5. Stress "Secret" Terms Cortisol: The primary stress hormone. Great for emergencies, but too much of it "eats" your memory and weakens your heart. Psychoneuroimmunology: The fancy word for the study of how your brain (stress) talks to your immune system. WEEK 13: Mental Wellness & The Science of Happiness The goal of this week is to identify the psychological frameworks and empirical studies that explain how humans build resilience and long-term well-being. 1. The Three Dimensions of Happiness (Module 14.5) According to the textbook, happiness is an enduring state consisting of joy and contentment. It is built through three "lives": The Pleasant Life: Attaining and savoring daily pleasures that add joy to the moment (e.g., the aroma of coffee or the feeling of sunshine). The Good Life: Identifying your unique skills and using them to enrich your life. This is where you find the state of Flow—being so "in the zone" that you lose track of time. The Meaningful Life: Using your talents and efforts in the service of the greater good or to help others, which provides a deeper sense of fulfillment than pleasure alone. 2. The Four Pillars of Well-Being (Wellness Studies) Based on Dr. Richard Davidson’s research, well-being is a "trainable skill" rather than a fixed trait. It is built on: Awareness: Noticing what your mind is doing in the present moment (meta-awareness). Connection: Cultivating kindness and healthy social relationships, which are the #1 predictor of long-term health. Insight: Having curiosity about how your own mind works and not believing every negative thought as a "fact." Purpose: Having a clear sense of direction or a "life compass" that guides your daily actions. 3. Empirical Evidence: The Creswell et al. Study (2014) This study provided scientific proof that mental training has biological effects: The Setup: An experimental design where students were randomly assigned to either a mindfulness group or an analytic control group. The Independent Variable: Brief 3-day mindfulness meditation training (25 mins/day). The Dependent Variable: Biological stress markers (Cortisol levels) and self-reported stress. The Result: The mindfulness group showed significantly lower cortisol levels, proving that meditation fosters biological resilience to stress. 4. Scientifically Proven Benefits of Gratitude Research shows that gratitude is a powerful "reset" for the nervous system: Physical: Improved sleep quality and duration; fewer reported aches and pains. Psychological: Reduces "toxic" emotions (envy, resentment) and increases mental strength. Studies of 9/11 survivors showed gratitude was a major factor in preventing PTSD. Social: Encourages "pro-social" behavior, making people more likely to form and maintain new relationships. 5. Mindfulness vs. Meditation (The State vs. The Practice) It is critical to distinguish between these two often-confused terms: Mindfulness: A state of being. It is the quality of being fully present, aware of where we are and what we’re doing, without being overly reactive or overwhelmed. Meditation: The formal practice or "mental gym" used to train the brain. It is the intentional time set aside to practice techniques that eventually lead to a consistent state of mindfulness. 6. Key Terminology & Cognitive Traps Affective Forecasting: The human tendency to overestimate how much future events (both good and bad) will affect our long-term happiness. We assume milestones like "perfect grades" will provide permanent joy, but they usually don't. Optimism & Resilience: Optimism is the general tendency to expect good outcomes. It is the "engine" of resilience—the ability to "bounce back" from major life stressors (like those listed on the SRRS). Problem-Focused vs. Emotion-Focused Coping: * Problem-Focused: Dealing with the stressor directly (e.g., studying for the test). Emotion-Focused: Managing the feelings associated with the stressor (e.g., taking a nap or exercising)

MMiPeople Francesco Redi: scientist who tested spontaneous generation with rotting meat and maggot formation with an open container, sealed container, and gauze-covered container, and refuted spontaneous generation Needham: scientist who tested spontaneous generation with boiling chicken broth, sealing the container, and waiting a few days to assess for microbial growth, and supported spontaneous generation Spallanzani: scientist who tested spontaneous generation with further testing, Needham’s experiment, and tested with an open and closed container that was later opened, and refuted spontaneous generation Louis Pasteur: scientist who used swan-neck flasks in his experiment and definitively refuted spontaneous generation Anthony van Leeuwenhoek: scientist who was the first to observe eukaryotic microbes, calling them “wee animalcule” Robert Hooke: coined the term “cell” when looking at cork Matthias Schleiden: observed cells in plant tissue Theodor Schwann: observed cells in animal tissue Rudolf Virchow and Robert Remark: observed cells dividing to make new cells (not mitosis) Hippocrates: suggested disease has natural causes Thucydides: advocated for evidence-based analysis of cause and effect and suggested immunity after observing plague survivors didn't get sick again Marcus Terentius Varro: the first to propose that things we cannot see cause disease Ignaz Semmelweis: physician who observed the spread of disease among patients in different sides of the hospital and instituted hand washing between patients to reduce the spread of disease from patient to patient via healthcare workers Joseph Lister: surgeon who observed post-surgical infection and instituted hand washing and sterilization of medical equipment with 5% phenol solution for less disease Robert Koch: scientist who developed Koch’s postulates to determine the cause of disease and had a rivalry with Louis Pasteur John Snow: questioned the London cholera outbreak and asked questions to the people who had been infected about where they had been and what they had eaten or drank, and noticed that everyone who had cholera used one of two water pumps Classification of microbes What are the 2 domains that are composed of all microbes? Bacteria and Archaea What domain of life is composed only of some microbes? Eukarya What types of microbes do not fit into the domains of life? Viruses and Prions Prions: unicellular organisms in the domains Bacteria and Archaea with no nucleus and have cell walls Viruses: acellular and domainless (not alive) Eukaryotes: unicellular OR multicellular organisms, in domain Eukarya, have a nucleus, have membrane-bound organelles, and include fungi, algae, protazoa, and helminths How many times bigger are bacteria than viruses? 100x A cell is around how many times bigger than an individual bacteria? 10x Cell structures Know the function, general location, and whether they are shared with eukaryotes (if yes similarities/differences) of the following structures: 1. Nucleoid: contains chromosome(s) and nuclear-associated proteins that are usually haploid and circular near the center of the cell, which hold the DNA genetic information without a membrane Eukaryotes = have a nucleus, are diploid and linear Prokaryotes = have nucleoid, are haploid and circular 2. Ribosomes: work with mRNA protein synthesis, made up of proteins and RNA, found in cytoplasm Eukaryotes: 80S, 60 large, 40 small (18S sequencing) Prokaryotes: 70S, 50 large, 30 small (16S sequencing) 3. Cytoplasm: fluid inner layer 4. Fimbriae: short, bristle-like projections for attachment to surfaces 5. Endospores: not all bacteria have, protect bacteria in a dormant state/ harsh environment, found inside bacteria, sporulation = the process of becoming dormant, germination = process of becoming active 6. Plasma membrane: semipermeable, composed of lipids and proteins, controls transport into and out of cell, most inner layer before cytoplasm (ex: facilitated diffusion, active transport, diffusion, endocytosis (Eukaryotes), sterols (Eukaryotes), and cholesterol (Eukaryotes) Same for Eukaryotes 7. Cell wall: protects against harsh changing environments and osmotic stress, contains peptidoglycan in bacteria, contains Gram + and Gram - Steps of Gram stain: dye with crystal violet, iodine (mordant), alcohol (decolorizer), and safranin red If mycobacteria complete an acid-fast stain Gram + has LTA an TA and one membrane Gram - has LPS and 2 membranes 8. Capsule: protective protein shell, outermost layer 9. Pilus: medium projection, adheres to surfaces, does DNA gene transfer 10. Flagellum: long protein projections made of flagellin for movement (ex: 1= monotrichous, one at each end = amphitrichous, many at one end = lophotrichous, many flagella all over the cell = peritrichous 11. Plasmid: circular, double-stranded DNA not part of the chromosome, and can have 1-100 of the same or different plasmids to help with gene transfer, antibiotic resistance, and virulence factors, found anywhere in the cytoplasm Not part of Eukaryotes 12. Inclusion: not all bacteria have, helps with the storage of nutrients and other materials, has protein shell, and is found in cytoplasm (ex: lipid droplets store fats, volutin stores inorganic phosphates, sulfur inclusions store sulfur, gas bubbles store gas for buoyancy in water, magnetosomes store metals for movement) Not part of Eukaryotes; instead, they have vesicles for storage All cellular microbes have what four (4) components? Cell Membrane, Cytoplasm, Ribosomes, and DNA What is the only component of all cells that viruses have? Cytoplasm Know/ be able to identify the shapes of bacteria Round shape: coccus Rod shape: bacillus Vibrio: curved rod shape Short rods with combo of coccus and bacillus: coccobacillus Wavy spiral shape: Spirillum Coiled spiral shape: Spirochete Microbial growth Phases of growth Lag Phase: bacteria gear up for replication by increasing cell size, metabolism, and protein synthesis Log Phase: exponential growth phase, where bacteria actively replicate and are most susceptible to antibiotics Stationary Phase: growth curve flatlines bc bacteria are dying at same rate of growth, begin survival mode and sporulation, produce secondary metabolites, and produce virulence factors, and are low on space, nutrients, and oxygen Death Phase: bacteria die at exponential rate, increase amount of toxic waste, release spores, some spontaneously lyse to feed others, and persister cells refuse to die How do microbes replicate? Through binary fission, fragmentation, budding, and sexually What is a biofilm? Communities of bacteria (steps: colonization, attachment, replication, make EPS with antibiotic resistance, EPS kick bacteria out to replicate somewhere else) How does quorum sensing work? Bacteria want to work together, so they secrete autoinducers, and when you activate enough receptors, they activate a response Growth requirements – classifications and adaptations 1. Oxygen requirements Obligate Aerobes: need O2 to survive Obligate Anaerobes: die in presence of O2 Faculative: mostly need O2 but can survive without it Microaerophiles: need O2 for survival but not atmospheric O2 (low levels) Aerotolerant: can survive with or without oxygen Capnophiles: like high CO2 and low O2 2. pH requirements Acidophiles: low pH (2-4), high H+ environments, efflux pumps to remove H+ ions, changes membrane composition to withstand low pH Neutrophiles: neutral pH (7), found within body Alkaliphiles: basic pH (9-10), modified lipid protein structures, modified electron transport system that use Na+ instead of H+, high OH- environment 3. temperature requirements Psychrophiles: like freezing temperatures a below 0-15 degrees, die at or above 20 degrees, found in cold lakes or the ocean floor, have hydrophobic proteins to increase flexibility, have decreased secondary stabilizing bonds Psychrotolerant: cold not ideal but wont kill them, live between 4-25 degrees (fridge temperature) Mesophiles: moderate temperatures, 20-40 degrees, grow in body Thermophiles: hot environments 50-80 degrees, hot springs, geothermal soil Hyperthermophiles: very hot environments 80-110 degrees, found in hydrothermal vents, increased saturation in membranes, increased stabilizing bonds, alter amino acids to prevent denaturation 4. osmolarity requirements Hypertonic: more water out Hypotonic: more water in Isotonic: equal water in and out Halotolerant: dont require salt but can grow in high salt environments Halophiles: love salt, found in ocean and salt lakes, have increased cytoplasmic glycerol, have efflux pumps for salt 5. barometric requirements Barophile: survive high atmospheric environments like the bottom of the ocean (something at top of mountain has low atmospheric pressure) Microbial Metabolism Means of generating energy (do the processes require oxygen?, which gives the most energy?) Glycolysis: does not require O2 bc it can be used during fermentation, used 2 ATP, makes 4 ATP, NET 2 ATP Kreb’s cycle: requires O2; NET after 1 round= 1ATP, 1 NADH, 1FADH2 (x2 for second round) Electron transport: requires O2, biggest payout of ATP with NET 34 ATP Photosynthesis: does not require O2 as it is a waste product, can do oxygenic and anoxygenic Microbial genetics DNA Replication – enzymes and functions DNA gyrase: unwinds DNA (enzyme) Helicase: unzips DNA (enzyme) Single-stranded binding proteins: bind to DNA so doesnt close back up (protein) Single-stranded binding proteins: bind to DNA so doesnt close back up (protein) DNA polymerase III: lay down new DNA nucleotides, synthesizes leading and lagging strands 5’ →3’(enzyme) DNA polymerase I: removes RNA primers (enzyme) DNA Ligase: seals RNA primers (enzyme) Topoisomerase 4: separates 2 circular chromosomes Transcription and translation – enzymes and function 1. RNA polymerase: turns DNA→ mRNA (transcription) 2. Ribosomes: 30S small, 50S large, 70S total 3. tRNA: A,P, and E sites, bacteria links transcription and translation bc no nucleus, has anticodon at opposite long 3’ end, high energy bond, same active translation process as Eukaryotes Be able to do DNA base pairing, transcription, and translation (given codon table) Also know differences between prokaryotic and eukaryotic Replication, transcription, and translation Genetic Diversity – how does this work? 1. Transformation: uptake of plasmid into different bacteria and is incorporated into its genetic material 2. Transduction: bacteriophage inserts its plasmid into a bacteria (virus that infects a bacteria) 3. Conjugation: like plasmid transfer (ex: rolling circle replication), “bacterial sex” 4

Oxidation - Reduction & The Mole (CH7)

Policies to reduce poverty and income/wealth inequality

Lecture 3: Government Policies Aimed at Reducing Poverty

Estimation of Reducing Sugars by DNS Method