nitrogen cycle


Значение термина nitrogen cycle в knolik


nitrogen cycle - nitrogen cycle
nitrogen cycle - Circulation of nitrogen atoms brought about mainly by living things. In outline, inorganic nitrogen compounds (chiefly nitrates), are absorbed from soil or water and built up into organic compounds by autotrophic plants. These die or decay or are eaten by animals and the nitrogen, still as organic compounds, returns to soil or water in their excreta or by their death and decay. Bacteria then convert them to inorganic nitrogen compounds. Some nitrogen is lost to the atmosphere as gas, and some is extracted from the atmosphere by nitrogen-fixing bacteria and blue-green algae.

Рядом со словом nitrogen cycle в knolik


nitrificationВ начало
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nitrogen fixation

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