The carbon cycle is significant in maintaining ecosystem balance as it regulates the flow of carbon among the atmosphere, biosphere, lithosphere, and hydrosphere. Carbon is a fundamental element found in all living organisms, and its cycle involves processes like photosynthesis, where plants absorb carbon dioxide, and respiration, where organisms release carbon back into the atmosphere. The carbon cycle also plays a crucial role in regulating climate and supporting life by ensuring a sustainable balance of carbon levels in the environment.