"Fixing nitrogen" refers to

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    application of fertilizers to adjust the chemical balance of farm fields.
     repairing damaged nitrogen molecules so that they can be used by organisms.
     release of nitrogen in the urine and feces of animals.
     release of nitrogen to the atmosphere by plants.
asked Jun 25, 2012 in Environmental Science by anonymous

1 Answer

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converting it to chemical forms that plants can utilize.
answered Jun 26, 2012 by Geodude ~Top Expert~ (9,680 points)