Question

what are sand dunes? where are they found​

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. In physical geography, a dune is a hill of loose sand built by aeolian processes or the flow of water.

Explanation:

hope it helps

Answer 2

Answer:

They are small mountains of sand found in a desert. They are firmed due to the wind, as wind carry sand here and there with it and deposit it any place.