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Nutrient Cycles(biogeochemical cycles): the ways in which an element or…
Nutrient Cycles(biogeochemical cycles): the ways in which an element or compound moves between its various living and nonliving froms and locations in the biosphere
Nitrogen Cycle
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Nitrogen can only be used as a componenet of nitrogen-containing ammonia, ammonium ions, and nitrate ions
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Soil to plants
nitrification the process of converthing ammonia into ammonium ions and nitrate ions.
Assimilation process of plants taking up ammoniuym and nitrate through their roots.
Air to soil
nitrogen fixiation: nitrogen converted into ammonia or ammonium by lightning and by specialized bacteria in the topsoil
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