The significance of the carbon cycle lies in its role in regulating climate, supporting life, and maintaining the balance of carbon in the atmosphere. This natural cycle involves the movement of carbon through various Earth systems, including the atmosphere, hydrosphere, lithosphere, and biosphere. Through processes like photosynthesis, carbon is absorbed by plants from the atmosphere, while respiration and decomposition return carbon to the atmosphere. The carbon cycle also influences global temperature and the capacity of ecosystems to exchange gases. Disruptions in this cycle can have profound effects on climate change and biodiversity.