Sand Dunes

What is dune sand made of?

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2009-06-15 20:43:40

A sand dune is when wind is blow over a rock or plant and

becomes higher and higher Sand dunes are formed when sand is blown

by the wind. The sand collects debris from the sea and they began

to pile up. More sand piles up so the mound becomes a sand dune.

Plants like Marram grass hold together sand dunes.

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