Question 10
after carbon goes into the atmosphere, what organisms must it pass through before it returns to the earth?

The plants

Explanation:

Plants are the organisms which use carbon dioxide from the atmosphere in a process called photosynthesis. Photosynthesis can be described as a process in which glucose and oxygen are produced from carbon dioxide and water in the presence of light energy. Hence, plants are the organisms which take carbon from the environment in the form of carbon dioxide and pass it to the Earth. Plants make their own food by the process of photosynthesis.