nitrogen cycle

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5 Terms

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Nitrogen fixation
The process by which nitrogen-fixing bacteria convert atmospheric nitrogen (N2) into ammonia (NH3).
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Assimilation

The process of taking in forms of nitrogen (NH3 or N03) by plants, and animals obtaining nitrogen by consuming plants.

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Nitrification
The process of transforming ammonia (NH3) into nitrite (NO2) and then into nitrate (NO3).
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Denitrification
The process of converting excess nitrate (NO3) back into atmospheric nitrogen (N2).
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Ammonification
The process of converting nitrogen from decomposed organisms back into ammonia (NH3), making it available for plant uptake.