1. Population Size
Parasitism &
Disease
Competition
Extreme Climate
Human
Disturbance
Predation

2. Limits to Growth Limiting Factors
Something that causes population growth to decrease
Competition
Predation
Extreme Climate
Parasitism & Disease
Human Disturbance

3. Pandas eat bamboo Bamboo forests are being destroyed by humans Panda populations are decreasing What type of limiting factor is this?

4. Gray wolves feed on deer Human hunters begin hunting deer in the gray wolf range The gray wolf population decreases due to lack of food What type of limiting factor is this?

5. Density-Dependent Factors
A limiting factor that depends on population size (has more of an affect the bigger the population)
Competition
Predation
Parasitism/Disease
Why do these affect larger populations?

6. Density-Independent Factors
Factors that affect a population, no matter the size
Human Disturbances
Extreme Weather

7. Human Population Growth
Turn to p129 in book Fig 5-10 Why does the population increase exponentially in the 1800’s? What is missing from this graph?

8. Read p128 in Textbook: Does the Gray Wolf Population Need Protection
Read p128 in Textbook: Does the Gray Wolf Population Need Protection? Read 2 more handouts on the issue Answer Research & Decide #1 & 2 on p128 in spiral