Babylon 10
The world's best online dictionary

Download it's free

Definition of Biogeochemical cycle

Biogeochemical cycle Definition from Society & Culture Dictionaries & Glossaries
EPA Glossary of Climate Change Terms
Natural processes that recycle nutrients in various chemical forms from the environment, to organisms, and then back to the environment. Examples are the carbon, oxygen, nitrogen, phosphorus, and hydrologic cycles.
Provided as a public service by the U.S. Environmental Protection Agency. Reference list click here.
Biogeochemical cycle Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
In  Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. A cycle is a series of change which comes back to the starting point and which can be repeated. Water, for example, is always recycled through the water cycle, as shown in the diagram. The water undergoes evaporation, condensation, and precipitation, falling back to Earth. Elements, chemical compounds, and other forms of matter are passed from one organism to another and from one part of the biosphere to another through biogeochemical cycles.'

See more at
© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License