1. Populations
Chapter 5
Unit 2

2. Characteristics of Populations
Geographic Distribution
Population Density
Growth Rate

3. Factors that affect Population Growth
Births
Deaths
Individuals that enter or leave the population
Immigration
Emigration

4. Exponential Growth reproduce at a constant rate
with unlimited resources, a population will grow exponentially

5. Logistic Growth Growth slows or stops resources become less available
Carrying capacity

6. Limiting Factors causes population growth to decrease
Density Dependent Factors
Become limiting only when the population density reaches a certain level

7. Density Independent Factors:
Affects all populations in similar ways, regardless of the population size