Carbon cycle – consisting of an atmospheric carbon cycle (and carbon dioxide cycle), terrestrial biological carbon cycle, oceanic carbon cycle and geological carbon cycle Nitrogen cycle – which converts nitrogen between its forms through fixation, ammonification, nitrification, and denitrification Oxygen cycle and Ozone–oxygen cycle – a biogeochemical cycle of circulating oxygen between the atmosphere, biosphere (the global sum of all ecosystems), and the lithosphere Ozone-oxygen cycle – continually regenerates ozone in the atmosphere and converts ultraviolet radiation (UV) into heat Water cycle – moves water continuously on, above and below the surface shifting between states of liquid, solution, ice and vapour Methane cycle – moves methane between geological and biogeochemical sources and reactions in the atmosphere Hydrogen cycle – a biogeochemical cycle brought about by a combination of biological and abiological processes Phosphorus cycle – the movement of phosphorus through the lithosphere, hydrosphere, and biosphere Sulfur cycle – a biogeochemical process resulting form the mineralization of organic sulfur, oxidation, reduction and incorporation into organic compounds Carbonate–silicate cycle transforms silicate rocks to carbonate rocks by weathering and sedimentation and transforms carbonate rocks back into silicates by metamorphism and magmatism.[8] Rock cycle – switches rock between its three forms: sedimentary, metamorphic, and igneous Mercury cycle – a biogeochemical process in which naturally occurring mercury is bioaccumulated before recombining with sulfur and returning to geological sources as sediments