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nitrifying bacteria:see nitrogen cyclenitrogen cycle,
the continuous flow of nitrogen through the biosphere by the processes of nitrogen fixation, ammonification (decay), nitrification, and denitrification. Nitrogen is vital to all living matter, both plant and animal; it is an essential constituent of amino acids,
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nitrifying bacteria[′nī·trə‚fī·iŋ bak′tir·ē·ə]
Members of the family Nitrobacteraceae.