Jonah Lee 3.8 Human Population Dynamics

Malthusian Theory

Proposed that Earth has a carrying capacity for humans, based off of food production

Technological Ad

Humans can alter Earth's carrying capacity with technological innovations

Growth Rate

the % increase in population per year

Crude Birth Rate (CBR)/Crude Death Rate (CDR)

Births and deaths per population of 1000 people

Calculating Growth Rate

(CBR-CDR)/10

Rule of 70

To find doubling time of pop, divide 70 by the percent of growth

Standard of Living

Quality of life based on ownership of necessities and luxuries that make life easier.

Life Ex

A figure indicating how long, on average, a person may be expected to live

GDP

Gross Domestic Product- the total market value of all final goods and services produced annually in an economy, indicative of standard of living

What does food have to do with human carrying capacity?

Population growth expands due to an increase in the availability of food, however only so much food can be produced, meaning humans will reach their carrying capacity.

What factors increase human growth rate?

Higher TFR → higher birth rate
High infant mortality rate can drive up TFR (replacement children)
High immigration level
Increased access to clean water & healthcare (decrease death rate)

What factors decrease human growth rate?

High death rate
High infant mortality rate
Increased development (education & affluence)
Increased education for women
Delayed age of first child
Postponement of marriage age

What is indicative of standard of living?

GDP, Life Expectancy, Crude Birth/Death rate

What does a growth rate of 5% for a population of 100 people mean?

in one year, 5 people will be added to the total population, so 105 in total after one year

How do technological advancements increase carrying capacity?

New tech like fertilizers or pesticides can allow for more food to be produced, increasing carrying capacity