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Biogeochemical: Key chemical constituents essential to life. (such as carbon, nitrogen, oxygen, phosphorus etc…)
Biomass: The total amount of living material in a given system.
Biogeochemical Cycle: The chemical interactionsand transport within and among the atmosphere, biosphere, hydrosphere and lithosphere (rocks).
Biogeochemical Cycles Movements through the Earth system of key chemical constituents essential to life, such as carbon, nitrogen, oxygen, and phosphorus.
Biogeochemical Cycle(4)
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.
biogeochemical cycle The chemical interactions among the atmosphere, biosphere, hydrosphere, and lithosphere. biological productivity The amount of organic matter, carbon, or energy content that is accumulated during a given time period.
 See also: Meteor, Altitude, Wind, Low, Norther
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