90% of poopulation growth is in developing countries of Africa, South and East Asia, and Latin America.
Population will reach 7 billion by 2011
Life expectancy- Average number of years to be lived by a group of people born in the same year.
United States- 78 years
Swaziland- 32 years
Rate of natural increase is births minus deaths
Net Migration Rate- The imagrants minus emigration
More people migrating now than ever before
Push forces- enviornmental degradation, economic trouble
Pull factors- better economy, better health care
Total Fertility rate- average number of children born per woman in her lifetime
For a population to remain the same TFR must be 2.1
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