nitrogen fixation, ammonification, nitrification, denitrification, assimilation
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6 Terms
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nitrogen fixation
the process of converting the N2 in the atmosphere into the chemicals nitrate, nitrite, and ammonia
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nitrogen fixation
occurs in species of bacteria that live in the roots of plants
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ammonification
decomposers break down the bodies of dead organisms, urine, and dung into ammonia
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nitrification
this occurs when bacteria that live in the soil take up ammonia and change it into nitrate and nitrite
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denitrification
this occurs when bacteria break down nitrates and produce N2 that is released into the atmosphere
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assimilation
this occurs when plant cells use nitrate, nitrite and ammonia to produce the proteins and nucleic acids needed by the cells
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