Question

Moraines and Barchans

Answer 1

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YOUR ANSWER:

MORAINES
a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity.
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BARCHANS
a crescent-shaped shifting sand dune, as found in the deserts of Turkestan.
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Answer 2

Explanation:

Moraines - Moraines are accumulations of dirt and rocks falling onto the top of the glacier and moved along as it passes by the glacier. The moraine composition can vary in size from powdery silt to large rocks. Moraines are formed from debris that had previously been carried along by a glacier and normally consist of rounded particles ranging from large rocks to minute glacial flour. At the side of the ice flow, lateral moraines are formed at the foot, marking the glacier's maximum advance.

Barchans - A barchan is a sand dune in the form of a crescent, with tips pointing downwind and a steep slip face. Individual barchan dunes are distinct and gradually travel along the barren surface of the desert. For a long time, wind blows in one direction carrying the sand. Wind carries sand along the edges of the mountain leading to the formation of a crescent moon structure known as the barchan.