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ICSE Class 9 Geography Question 8 of 21

Denudation — Question 19

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Question 19

Assertion (A): Barchan are moon-shaped live dunes.

Reason (R): The migration of the barchans is a threat to desert life.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R does not explain A.
  3. A is true but R is false.
  4. A is false but R is true.
Answer

Both A and R are true but R does not explain A.

Explanation — Barchans are moon-shaped live dunes which advance steadily before winds that blow from a particular direction. The migration of the barchans is a threat to desert life as they sometimes encroach on an oasis, burying palm trees or houses.