Food cycles, also known as nutrient cycles or biogeochemical cycles, refer to the pathways that nutrients take as they circulate through ecosystems. These cycles include the carbon cycle, nitrogen cycle, phosphorus cycle, water cycle, and sulfur cycle. Each cycle involves various processes that are critical to maintaining life on Earth. For instance, the carbon cycle involves the exchange of carbon between the atmosphere, oceans, and living organisms. The phosphorus cycle is important for the growth and development of plants, while the nitrogen cycle is crucial for the formation of proteins and DNA. Essentially, these cycles comprise the intricate web of life on our planet, and understanding them is crucial to preserving ecosystem health.