Question

what are sand dunes?how are they formed

Answer 1

a sand dunes is mound of sand formed by the wind along on the beach or in a desert sand dunes from when blowd sandd into a shelter area for behind obstacles grain of sand accumulate .

Answer 2

• When wind blouse, it lifts and transports and from one place to another. when it stops blowing the sand Falls and gets deposited in low Hill like structures. these are called sand dunes.