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| Description: Nitrogen fixation = inert nitrogen gas from the atmosphere is combined with hydrogen to form ions of ammonium Nitrification = specialized bacteria converts ammonium ions into nitrite ions, then by another group of specialized bacteria into nitrate ions Denitrification = bacteria convert nitrates in soil or water into gaseous forms of nitrogen Carried out by several varieties of bacteria Picture Stats: Views: 332 Filesize: 804.06kB Height: 974 Width: 762 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35722 |