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.

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Answer 2

Answer:

A sand dune is a mount, hill or ridge of sand that lie behind the part of the beach affected by tides. they are formed over many years when windblown sand is trapped by beach grass or other stationary objects. ... without vegetation, wind and waves regularly change the form and location of dunes.

Explanation:

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