1. An is a biological unit made up of non-living and living parts.

2. Competition is an abiotic factor.

    True

    False

3. Which of the following is a biotic factor?

    Light intensity

    pH

    Predation

    Oxygen concentration

4. A population is all the living organisms that inhabit a particular area.

    True

    False

5. Arctic tundra, tropical rainforest and desert are all examples of a .

6. In a predator prey line graph, the predator line will always be slightly behing the prey line.

    True

    False

7. What name is give to the place where an organism lives within its environment?

8. Overgrazing causes an increase in biodiversity.

    True

    False

9. Undergrazing causes an increase in biodiversity.

    True

    False

10. What word is used to describe areas of desert increasing in size?