Carbon Cycle

Definition

The carbon cycle is the movement of carbon atoms between living organisms (plants and animals), the atmosphere (as carbon dioxide), bodies of water (as dissolved carbon dioxide), and fossil fuels (as stored carbon).

Related terms

Photosynthesis:

The process by which green plants use sunlight to convert carbon dioxide and water into glucose (sugar) and oxygen.

Respiration:

The process by which living organisms release energy from glucose molecules while producing carbon dioxide as a waste product.

Decomposition:

The breakdown of dead organic matter by bacteria and fungi that releases stored carbon back into the environment.