NITROGEN CYCLE - PowerPoint PPT Presentation
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NITROGEN CYCLE
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Nitrogen in the atmosphere Nitrogen fixation by bacteria Atmosphere fixation by lightning Oxides of nitrogen in the atmosphere denitrification Nitrogen in bacteria ... – PowerPoint PPT presentation
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Title: NITROGEN CYCLE
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NITROGEN CYCLE
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Nitrogen in the atmosphere
Nitrogen fixation by bacteria
Atmosphere fixation by lightning
denitrification
Oxides of nitrogen in the atmosphere
Nitrogen in bacteria
nitrification
Nitrates in the soil
Uptake by roots
nitrification
feeding
Protein in plants
Protein in animals
death
death
nitrification
nitrites
Ammonia in dead organic matter
