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_____ ______ Published September 27, 1962
Rachel Carson's Silent Spring brought attention to the effects of dichlorodiphenyltrichloroethane (____), a pesticide that was used to control insects in _____
DDT was banned in 1972 due to its impact to _____ but is still used in some countries (usually for malaria control)
DDT breaks down quickly in _____. It sticks strongly to soil, breaking down usually in less than 15 years, depending on the type of soil
DDT builds up in plants and the _____ issue of animals. It was used in agriculture
The most notable impact to animals was in the ______ system, including seizures
Silent Spring; DDT; agriculture; wildlife; sunlight; fatty; nervous
The Impact of DDT on Bald Eagles
DDT caused "_____ ______" which made the eggshells of birds, including the bald eagle (the national symbol) too fragile for a parent to incubate. The shells broke under the bird. This is why the species was listed as endangered. By 1963 there were only 417 nesting pairs known to exist
This is an example of biomagnification (or ________)
eggshell thinning; bioaccumulation
Bald Eagles (2021)
The US Fish and Wildlife Service estimates that there are 71,467 breeding pairs in the lower 48 states in 2018-2019
The species is ____ longer listed as threatened or endangered, but it is protected under the ____ ____ ____ Act (1918) and the _____ ______ ______ ______ ____ Act (1940). Both pieces of legislation prohibit killing, selling or otherwise harming eagles, their nests, or their eggs
no; Migratory Bird Treaty; Bald and Golden Eagle Protection
The First Earth Day (April 22, 1970)
Earth Day was first celebrated on ____ _____, 1970
Now a celebration, the first Earth Day was a ____ for the environment
April 22; protest
The Environmental Protection Agency (1970)
Created by 37th US President, ____ _____ [R] on December 2, 1970
The new government agency incorporated parts of pre-existing agencies, and empowered it to research, monitor, and enforce penalties on pollution in air, water, and soil
Established "____ ______" to understand improvements or worsening of pollution over time
Supported states to develop/expand their own pollution control programs, which many be ____ stringent than federal standards
Richard Nixon; environmental baselines; more
Safe Drinking Water Act (1972)
Signed by President _____
Protect drinking water in the US (____ supply wells)
Covers all waters actually or potentially designed for ____ use (surface or groundwater sources)
EPA establishes minimum standards to protect tap water
Drinking water producers must comply with these standards
The maximum contaminant level (MCL) is the maximum level allowed of a contaminant in water which is delivered to any user of a public water system
Ford; public; drinking;
Toxic Substances Control Act (1976)
Signed by President _____
Granted authority to the EPA to require reporting, record keeping and testing requirements, and restrictions relating to chemical substances and/or mixtures
Excluded: food, drugs, cosmetics, pesticides, others (these fall under later laws: Federal Insecticide, Fungicide, and Rodenticide Act (1996), Feder Food, Drug, and Cosmetic Act (2002))
Specifically addressed the production, importation, use, and disposal of polychlorinated biphenyls (PCBs), asbestos, radon, and lead-based paint
Ford
Resource Conservation and Recovery Act (1976)
Signed by President ______
Granted authority to the EPA to handle hazardous waste from "cradle to grave" including the generation, transportation, treatment, storage, and disposal of hazardous waste
Created a framework for management of non-hazardous solid wastes
1984 amendments: Hazardous and Solid Waste Amendments (HSWA) - waste of minimization and phasing out land disposal of hazardous waste
Made EPA the enforcement authority
Created more stringent hazardous waste management standards
1986 amendments enabled the EPA to address leaking underground storage tanks (petroleum and other substances)
Ford