- The definition of a biogeochemical-cycle is the flow of chemical elements between living organisms and the environment.
An example of the biogeochemical-cycle is when inorganic elements such as nitrogen and carbon are taken in by organisms and then converted into organic substances of plants or animals and released back into the environment.
biogeochemical cycle definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the cycle in which nitrogen, carbon, and other inorganic elements of the soil, atmosphere, etc. of a region are converted into the organic substances of animals or plants and released back into the environment
biogeochemical cycle - Science Definition
The flow of chemical elements and compounds between living organisms and the physical environment. Chemicals absorbed or ingested by organisms are passed through the food chain and returned to the soil, air, and water by such mechanisms as respiration, excretion, and decomposition. As an element moves through this cycle, it often forms compounds with other elements as a result of metabolic processes in living tissues and of natural reactions in the atmosphere, hydrosphere, or lithosphere. See more at carbon cycle, nitrogen cycle.