Question

what do you mean by sand dunes?​

Answer 1

Sand dunes - Hill of sand near an ocean or in a desert that is formed by the wind .

Answer 2

$\huge \pink \star{ \green{ \boxed{ \boxed{ \boxed{ \purple{ \mathcal{Answer }}}}}}} \pink\star⋆$

Dune is a mound of sand formed by the wind, usually along the beach or in a desert.