Unit 3 Part 2- Human Population Growth

Demography

study of human population

Neolithic Revolution

birth of agriculture, 10,000 BC, led to increase in population (more reliable food sources)

Industrial Revolution

invention of steam engines, 1800s, led to increase in population (ease of travel and movement of goods)

Medical Revolution

improvement of sanitation and discovery of antibiotics, early 1900s, led to increase in populaiton (improved health)

Green Revolution

movement towards coporate farming and use of genetically engineered crops, early 1900s, led to increase in population (more food)

developed countries

countries in which individuals earn an average of $39,000 or above a year

developing countries

both middle and lower income countries; typically most people are middle income, but the highest population growth rate is found in the lower income countries

total fertility rate

the average number of babies a woman has in her lifetime.

replacement fertility

having 2 babies

low fertility

TFR of less than 2 babies

high fertility

TFR of more than 2 babies

age structure diagram

graph that shows the population size of men and women at different ages in the population

population momentum

the continued increase in population due NOT to fertility rate, but just the large size of a population

demographic transition

the change in birth and death rates as a country moves from developing to developed and how that affects population growth

IPAT formula

impact on environment = population size x affluence (wealth) of population x technology