Q. Who described the three layers of the earth as ‘sial’, ‘sima’, and ‘nife’ ?

  • (A) Dally
  • (B) Gracht
  • (C) Holmes
  • (D) None of the above
✅ Correct Answer: (B) Gracht

Published by Ruchi Sharma ⭐ 9.87K Points at 04-Aug-2021 06:28 am in Geography

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