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Key Terms
• Denitrification– removal of nitrogen or
nitrogen compounds – Conversion of nitrogen
to gaseous form
Ammonium
• Form of nitrogen contained in fertilizer
• generated in soil by breakdown of organic matter
• NH4
Mineralization• Organic compounds to
inorganic compounds•(Organic) Dead plant, animal material
•(Inorganic) nitrates, carbon dioxide
Amount of Nitrogen
• 78.08% in atmosphere• 79% bound nitrogen in lithosphere• Mass of nitrogen 20,000,000,000,000 tons
in hydrosphere• 80% in biosphere
Ecological Impact• About 90% of the soil• Denitrification decreases fertility of
plants• High concentrates of nitrates are toxic• Without Denitrification life would not be
possible except near large bodies of water
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%20(2003)/slides/Rocky%20Forest%20Path.html• http://www.citivestmortgage.com/linkstoResources.html