Every year Eli and his family visit Great sand dunes desert in Colorado. Elliott notices that more dunes with varied shapes and sizes appear each year. Explain what causes this phenomenon.

Question

Help!

I know that the wind is always different and that causes erosion.

Answer 1

http://www.desertusa.com/desert-activity/sand-dune-wind1.html

Answer 2

thank you Ms.Sue

Answer 3

@Your Worst Nightmare how can she if you don’t have one?