Question

Which of the following is a form of a sand dune?
(a) Loess
(c) Barchan
(b) Cirque
(d) Moraine​

Answer 1

Answer:

Barchan

Explanation:

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Answer 2

Option (c) Barchan is a form of a sand dune.A barchan is a sand dune in the form of a crescent, with a downward-pointing and a sharply slippery face.

Explanation:

Barchan - A barchan is a sand dune in the form of a crescent, with a downward-pointing and a sharply slippery face. The individual barchan mounds are distinct and gradually travel along the barren surface of the desert. For a long time the wind carries the sand in one direction. The wind carries sand along the sides of the mountain to form a crescent shaped structure known as a barchan.