Carbon enters the Atmosphere and consumes the Air with Carbon Dioxide (CO2). Respiration and Combustion. Carbon is used for respiration for any living organisms such as animals that are consumers and plants that are producers.
Carbon dioxide is absorbed by the plants to make carbohydrates in the process photosynthesis. The plants also use the carbon through photosynthesis to grow.
Animals feed on plants that are passing carbon compounds along the food chain. Most of the carbon they consume is exhaled as carbon dioxide, that was formed during respiration.
The animals and plants eventually die. Then their dead bodies are eaten by decomposers and inside their bodies is returned to the atmosphere as carbon dioxide.
Fossil Fuels provide most of the energy that supports human transportation, electricity production, heating and coiling of buildings and industrial activity.
Burning fossil fuels puts CO into the atmosphere
After the CO is used by humans and other living organisms fuels are released back into the atmosphere where it began, completing the cycle.