1. Population in Detail

2. Exponential Growth
→ model of population growth that
describes a population that increases
rapidly after only a few generations
→ larger the population gets, the faster it
grows
→ limiting factor

3. Carrying Capacity
→ number of individuals the environment
can support over a long period of time
→ includes limiting factor

4. 2 types of limiting factors
a. Density-independent factors
1. weather, floods, fires
2. reduce population by same proportion regardless of size
b. Density-dependent factors
1. resource limitations
2. triggered by increasing population

5. Population Age Structure
How many individuals fit into a particular age category
Predicts how rapidly a population will grow

6. - 5-year increments
- total area of all bars → size of whole population
- population pyramid

7. Life Expectancy
average number of years that an infant born can be
expected to live
- depends on:
* healthcare
* sanitation
* living conditions
* aging
* disease (HIV)

8. Impacts on Birth Rate and Death Rate
- access to family planning
- education
- women in the workforce
- cultural beliefs
- sanitation
- access to healthcare