Biogeochemical cycles are natural processes that involve the cycling of elements or compounds through living organisms and their environment.
Carbon cycle: The movement of carbon between living organisms, the atmosphere, oceans, and Earth's crust.
Water cycle: The continuous movement of water between the atmosphere, land surface, underground reservoirs, and bodies of water.
Phosphorus cycle: The cycling of phosphorus through rocks, soil, water bodies, plants, animals, and back to the environment.