sand dunes are created when a small shurb or plant becomes buried in sand then eventually the sand builds up to what we see today
it is formed by the wind. the wind blows the sand back on forth to create the dune.
Barchan dunes are solitary crescent dunes formed on a flat, hard ground with limited supplies of sand and vegetation. Transverse dunes are a series of long ridges that are found in areas that have a...
by wind
By wind blowing in all different directions. It has a central peak with multiple arms.