1. Demographic Trends
Chapter 36

2. Demography The study of human population statistics
Affected by birth, death, immigration & emigration rates
IR & ER often similar
Population size depends on BR – DR + IR- ER
A demographic transition model shows population growth with cultural development

3. Population pyramids
Represents population structure with respect to age and sex
Used for predicting future population structure
Also indicates future needs of the populace
Developing countries – lots of young dependants
Developed countries – more elderly dependants
Some gender imbalances can be seen

4. Population Control Human population growing exponentially
Eventually global carrying capacity could be reached
Planet will be unable to support any further population increase
Limiting factors could regulate population
(increased death rate)
Deer population used as a model

5. Birth Control / Morals
Birth control is most realistic option for population control
But differences in:
- religious beliefs
- medical care standards
- economic situation
- cultural/social backgrounds
- education
- status of women
- morality of birth control imposition
all affect the effectiveness of birth control
Family planning needs social & economic support
Population control biggest problem facing mankind