AP Environmental Science / Unit 3: Populations
3.8 Human Population Dynamics
Notes
Factors: birth rate, death rate, immigration, emigration.
- Growth rate (%) $\displaystyle =\frac{\text{(births+immigration)}-\text{(deaths+emigration)}}{\text{population}}\times100$.
- Malthus warned that population would outgrow food supply.
Practice
Crude birth rate 20, death rate 8 (per 1,000). Growth rate:
$\displaystyle \frac{12}{1000}$.
Which slows population growth?
More deaths.
The Malthusian idea is that:
Exponential vs linear growth.
Ready for more? Take the Unit 3 test.