The Human Population

Thomas Malthus and Paul Ehrlich

described the relationship of the human population and using resources and destroying ecosystems and understood this wouldn’t be sustainable in the long run

impact

what does I mean in the IPAT model?

human population size

what does P mean in the IPAT model?

affluence

what does A mean in the IPAT model?

state of technology

what does T mean in the IPAT model?

waste

affluence means we use more resources and produce more ___________

minerals

in order to produce technology, it requires rare ________ and a lot of resources

mining

________ is incredibly impactful on the environment

lower

population growth rates are ________ in more developed countries

females

_______ tend to survive longer

size, density and distribution, age structure, sex ratios

what goes into demography?

children

the very youngest populations is lower than 20-40, which means people are having less ___________

population increasing rapidly

population stable

population decreasing

fertility rate

strong correlation between income and ________

less

if income is high, people tend to have _______ children

medical care

some countries have higher infant mortality rates because of worse __________

declining

growth rate is _______, especially in more developed regions

birth rate

_________ declines due to increased opportunities for women and access to birth control

freshwater

Nigeria has such a large population that they are concerned about access to __________

global human footprint

estimate of how much stress human activities are placing on a particular area

agriculture

high correlation between how suitable an area is for ________ and how degraded it is by human activity