Nitrogen Cycle
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Last updated 1:25 PM on 9/24/25
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5 Terms
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Nitrogen Fixation
bacteria Converts unusable Nitrogen gas (N2) into usable forms
Converts Nitrogen gas into Ammonia (NH3)
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Nitrification
Ammonia is converted into Nitrite, then Nitrate
Ammonia is a form of nitrogen that can be toxic. Converted into usable and stable forms
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Assimilation
Plants/algae absorb Nitrate
Eaten by animals
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Ammonification
decomposers break down organic material, like waste
Converts organic Nitrogen gas to Ammonia, then dissolved to Ammonium (NH4+)
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Denitrification
Denitrifying bacteria convert Nitrate back to Nitrogen gas
Gas goes back up to the atmosphere
Note 
Flashcards (342)