Question

describe the formation of sand dunes​

Answer 1

Answer

Sand dunes are created when wind deposits sand on top of each other until a small mound starts to form. Once that first mound forms, sand piles up on the windward side more and more until the edge of the dune collapses under its own weight. ... As more barchan dunes are formed, they can move together and line up.

Answer 2

Answer:

Sand dunes are created when wind deposits sand on top of each other until a small mound starts to form. Once that first mound forms, sand piles up on the windward side more and more until the edge of the dune collapses under its own weight. ... As more barchan dunes are formed, they can move together and line up.

Explanation:

A dune is a landform composed of wind- or water-driven sand. It typically takes the form of a mound, ridge, or hill.[1] An area with dunes is called a dune system or a dune complex.