1. What environmental factors influence population size?
Tropical forest support Large populations of trees.
A dessert support few or no trees
The sources are vary between different environments (food, water, space).

2. B

3. Option C/ wolves and moose
Time 1
2.5 3 5 7 8 9 10
Prey pop 16 23
Predator pop

5. Limiting factors Objectives: 1. Define a limiting factor
2. Identify the limiting factor that causes the problem to the population.
3. Classify this factor as a biotic or abiotic limiting factor.

6. Limiting factor Case # Limiting factor Type /nature
Affect on the population
1-plant growing in a rock whole
Rock
Abiotic
Limits the growth of the plant population.
2- withered flowers in snow
3- Lion hunting a zebra
4- A disease affecting a leaf
5-people facing a flood
6- using insecticides for plants

7. Multitask wheel chart

9. Option B

10. Why competition happen?
What are the effects on the competitors