The carbon cycle is the circulation and transformation of carbon back and forth between living things and the environment. Carbon is a component, something that can't be separated into a less difficult substance. Carbon mixes are available in living things like plants and creatures and in nonliving things like rocks and soil. Carbon mixes can exist as solids, (such as diamonds or coal) liquids, (for example, raw petroleum), or gasses, (for example, carbon dioxide). Carbon is frequently alluded to as the "building block of life" since living things depend on carbon and carbon compounds. Carbon is exchanged, or "cycled" among Earth's seas, environment, biological system, and geosphere. It is an imperative part of many chemical processes. It is available in the air fundamentally as carbon dioxide (CO2), additionally as different less inexhaustible yet climatically critical gasses, for example, methane (CH4).