The carbon cycle refers to the process by which carbon is exchanged between the atmosphere, land, and oceans. It involves several steps including photosynthesis, respiration, decomposition, and combustion. During photosynthesis, plants absorb carbon dioxide from the air and convert it into organic matter through a process that also releases oxygen back into the atmosphere. Animals then consume these plants or other animals to obtain energy, which they get by breaking down the organic matter in their bodies through cellular respiration. This process produces carbon dioxide as a waste product, which is released back into the air. When plants and animals die, their remains decompose, releasing carbon dioxide back into the atmosphere or dissolving it into water bodies where it forms carbonic acid. Combustion of fossil fuels also releases large amounts of carbon dioxide into the atmosphere. The carbon cycle is a delicate balance that helps regulate Earth's climate and supports life on our planet by providing energy for living organisms.