Cycles

Carbon, Nitrogen & Phosphorus

Carbon Cycle

The combined processes, including photosynthesis, decomposition, and respiration, by which carbon as a component of various compounds cycles between its major reservoirsthe atmosphere, oceans, and living organisms.


Nitrogen Cycle

The series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.

Phosphorus Cycle

The phosphorus cycle is the biogeochemical cycle that describes the movement of phosphorus through the lithoshpere, hydropshere, and biosphere.