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WAEC Agricultural Science 2012 Question 15

Question 15

Soil Fertility and Plant Nutrition

Loss of nitrogen from the soil through the removal of oxygen from nitrates by bacteria is known as

  1. A.ammonification.
  2. B.dehydration.
  3. C.denitrification.
  4. D.nitrification.
Show the answer and explanation

Answer: C (denitrification.)

Explanation

Denitrifying bacteria reduce nitrates to nitrogen gas, which escapes into the air.