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WAEC Agricultural Science 2008 Question 13

Question 13

Soil Fertility and Plant Nutrition

Sources of nitrogen to the soil include the following except

  1. A.lightning
  2. B.urea
  3. C.blue-green algae
  4. D.residues of burning activities.
Show the answer and explanation

Answer: D (residues of burning activities.)

Explanation

Burning drives nitrogen off as gas.