title: Denitrification.
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D009565:Nitrate Reductases / Q000378:metabolism; D009566:Nitrates / Q000378:metabolism*; D009569:Nitric Oxide / Q000378:metabolism; D009572:Nitrite Reductases / Q000378:metabolism; D009573:Nitrites / Q000378:metabolism*; D009589:Nitrogen Oxides / Q000378:metabolism; D010088:Oxidoreductases / Q000378:metabolism; D010100:Oxygen / Q000502:physiology; D012722:Sewage; D012988:Soil Microbiology; D013696:Temperature; D014871:Water Microbiology
chemical_list: D009566:Nitrates; D009573:Nitrites; D009589:Nitrogen Oxides; D012722:Sewage; D009569:Nitric Oxide; D010088:Oxidoreductases; D009565:Nitrate Reductases; D009572:Nitrite Reductases; C022763:nitrous oxide reductase; C034747:nitric-oxide reductase; D010100:Oxygen