1. Let’s Practice 1.Name the two producers(autotrophs)in this diagram. 2.Identify two primary consumers in this diagram. 3.Identify two secondary consumers in this diagram.

2. Let’s Practice 4. Identify one primary consumer in this diagram. 5. Identify one secondary consumer in this diagram. 6. Identify one tertiary consumer. 7. Indentify one quaternary consumer.

3. Let’s Practice 8. Explain the role of grass in this food web, and include in your response why it is at the bottom of the web.

4. Let’s Practice 9. Explain what would happen to the population of snakes if the rabbits were suddenly removed from this ecosystem.

5. Let’s Practice 10. Explain what would happen to the population of grasshoppers if the insect-eating birds were suddenly removed from this ecosystem.

6. Let’s Practice 11.Which organisms have the most energy available to them? 12.Which organisms have the least energy available to them? 13.In one complete sentence, explain what happens to the amount of available energy as you move up the food chain.

7. Let’s Practice 14. Which animals are at the top of the food chain? 15.Which animals are found at the bottom of this food chain? 16.What is missing from this food web?