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WAEC Geography 2015 Question 14

Question 14

Structure of the Earth

The part of the earth's crust which is made up of silica and alumina is the

  1. A.sima.
  2. B.mantle.
  3. C.barysphere.
  4. D.sial.
Show the answer and explanation

Answer: D (sial.)

Explanation

SIAL = SIlica + ALumina, the continental crust.