Question

what are sand dunes​

Answer 1

Answer:

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.

Explanation:

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Answer 2

Answer:

Dunes are largest masses wind blown sand and most common in deserted environments is known as sand dunes