1. Population Growth in an Ecosystem
Cornell Notes page 157

3. 1. Why does the population of predators increase when the population of prey increases? 2. Why does the population of prey decrease as the population of predators increases?

5. What might happen if we removed the predators from the area?

7. Limiting Factors
Resources, such as food, water, and living space are limited, and therefore limit the size of a population.

8. 3. Floods can deposit nutrients in the soil which help producers grow
3. Floods can deposit nutrients in the soil which help producers grow. How might this affect an ecosystem? 4. Droughts are periods of time in which an area experiences an unusually low amount of water. How might this affect an ecosystem? 5. A wild fire clears out the brush in a forest. How might this affect an ecosystem?

9. Carrying Capacity
The largest population that a an environment can sustain.

10. Carrying Capacity Can change if something in ecosystem is changed
ex.) floods, drought, wild fires, overgrazing, deforestation, invasive species

11. What determines what the carrying capacity of a population will be?
Think and Discuss:
What determines what the carrying capacity of a population will be?
Do you think a population can ever be larger than its carrying capacity?
What do you think would happen if a population did grow larger than its carrying capacity?

13. How else do predators and prey affect each other?
Think and Discuss:
How else do predators and prey affect each other?

14. Consider the Peppered Moth…

15. Here they are, again, on a tree.

16. After the Industrial Revolution, the trees were covered with soot and pollution…

17. Predator
Adaptations
Goldenrod

19. http://travel. nationalgeographic

20. Prey
Adaptations
camouflage

21. Defensive chemicals

22. Warning Coloration

24. Mimicry

25. Venomous Red Coral Snake
Harmless Red Milk Snake