Question

what are sand dunes​

Answer 1

Answer:

A dune is a landform, and is a large mass of wind-blown sand. Dunes are most common in deserted environments, such as the Sahara, and also near beaches. An area with dunes is called a dune system. The dynamic action of wind and water can sometimes causes the dunes to drift, which can have serious consequences

Explanation:

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Answer 2

Answer:

sand dunes are loads of sand found in a desert.They are formed during sandstorms