1. Chapter 5
Populations

2. Factors Affecting Population Growth
Birthrate (+)
Death rate (-)
Immigration (+)
Emigration (-)

3. Exponential Growth
The size of each generation of offspring will be larger than the one before it
The larger the population gets, the faster it grows

5. Logistic Growth
Is when a population’s growth slows and then stops, after a period of exponential growth
Growth stops when birthrate = death rate and immigration = emigration

7. Carrying Capacity
Is the maximum number of individuals of a particular species that a particular environment can support

8. Limits A limiting factor controls the growth of a population
Examples – competition, predation, parasitism, disease, unusual weather, natural disaster
These determine carrying capacity

10. Human Population Slow growth early
Civilization advancements increased growth
Bubonic plague caused a decrease
Industrial Revolution led to exponential growth

11. Current world population over 7 billion
US Census taken 2010