NOTES ON WORLD POPULATION
A. Why do people live where they do?
B. 5 main population centers
2. South Asia
3. Southeast Asia
4. Europe
5. Eastern North America
C. Ecumene: places where people live year-round
1. People were nomadic
2. Farming allowed
3. Today ecumene
D. Differing measures of population density
1. Arithmetic (a/k/a population) density
2. Physiological (a/k/a nutritional) density
3. Agricultural
4. Ratio of physiological to agricultural density shows economic growth
a. high ratio means a strong economy (MDCs)
b. low ratio means a weak economy (LDCs)