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WAEC Biology 2008 Question 45

Question 45

Nutrient Cycling

Which of the following substances is not recycled in an ecosystem?

  1. A.Carbon
  2. B.Energy
  3. C.Water
  4. D.Nitrogen.
Show the answer and explanation

Answer: B (Energy)

Explanation

Matter such as carbon, water and nitrogen is recycled, but energy flows one way and is lost as heat.