1. What is being cycled 2. What molecules are involved

3.list the biotic components of the cycle

4. list the abiotic components of the cycle

5.what is the major reservoir of carbon

6.plants remove co2 from the atmosphere is a process called ?

7. plants and animals release co2 into the atmosphere is a process called?

8.how is carbon returned into the atmosphere ?

9.why is this cycle important to the ecosystem?