AP BIOLOGY

Detailed explanation-1: -Consumers or heterotrophs such as humans and animals consume the organic molecules. Thus the organic carbon is passed through food chains and webs. The by-product of photosynthesis is oxygen, which plants release into the atmosphere through the stomata.

Detailed explanation-2: -Consumers contribute to the carbon cycle when they perform respiration and expel carbon dioxide into the atmosphere. Consumers also take in carbon-containing molecules like starches and sugars when they consume plants. Like plants, consumers release carbon compounds into the environment when they die.

Detailed explanation-3: -Cellular respiration and photosynthesis are important parts of the carbon cycle. The carbon cycle is the pathways through which carbon is recycled in the biosphere. While cellular respiration releases carbon dioxide into the environment, photosynthesis pulls carbon dioxide out of the atmosphere.

Detailed explanation-4: -In the natural carbon cycle, there are two main processes which occur: photosynthesis and metabolism. During photosynthesis, plants use carbon dioxide and produce oxyge and during metabolism oxygen is used and carbon dioxide is a product.