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Question
Denitrifying bacteria convert ______.
Options
nitrites to nitrates
nitrates to molecular nitrogen
molecular nitrogen to nitrate
nitrate to nitrites
MCQ
Fill in the Blanks
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Solution
Denitrifying bacteria convert nitrates to molecular nitrogen.
Explanation:
Denitrifying bacteria, such as Pseudomonas, reduce nitrates to nitrous oxide, nitric oxide and finally to molecular nitrogen. This process returns nitrogen to the atmosphere.
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