Why is there sand in deserts and no dirt? Why isn’t there sand anywhere else?

Question

I figured it was something to do with sand being light enough to be carried by wind, but that wouldn’t explain why the rest of the world lacks sand.

In: 327

Answer 1

Old seabeds are deserts today, supposedly that’s and is from coral and stuff from a long time ago. Other areas may be cast off from stone or something, I’ve looked into the same thing before