Question

what is sand dunes and how are beaches formed​

Answer 1

Explanation:

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.

Beaches are wave-deposited accumulations of sediment located at the shoreline. They require a base to reside on, usually the bedrock geology, waves to shape them, sediment to form them, and most are also affected by tides.

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.