Question

what is sand dunes?...
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Answer 1

Dunes are large masses of wind-blown sand, and are most common in deserted environments, such as the Sahara, and also near beaches. An area with dunes is called a dune system. In physical geography, a dune is a hill of loose sand built by aeolian processes or the flow of water.

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PLS MARK BRAINLIEST...

Answer 2

Answer:

sand dunes are the huge mountain of sand which form due to the running hot wind on registan sandunes are formed when the wind is collected in a similar place. the are usally found in hot and dry places like rajastan, etc etc.