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nitrification

noun [U]
 
 
/ˌnaɪ.trɪ.fɪˈkeɪ.ʃən/ specialized

Definition

the process in which bacteria in the soil use oxygen to change compounds of nitrogen in dead plant material into nitrates which plants can then absorb as foodPhysical and chemical processes
(Definition of nitrification noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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