Nitrifying Bacteria Participate in the Nitrogen Cycle Mainly by ________

question 74

Multiple Choice

Nitrifying bacteria participate in the nitrogen cycle mainly by ________.

• A) converting nitrogen gas to ammonia
• B) releasing ammonium from organic compounds, thus returning it to the soil
• C) converting ammonium to nitrate, which plants absorb
• D) incorporating nitrogen into amino acids and organic compounds

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