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WAEC Biology 2019 Question 25

Question 25

Animal Kingdom

The major mineral present in the shell of Molluscs is

  1. A.copper.
  2. B.sodium.
  3. C.iron.
  4. D.calcium.
Show the answer and explanation

Answer: D (calcium.)

Explanation

Snail and other mollusc shells are made mainly of calcium carbonate.