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

A large portion of the worlds sands are created by parrot fish. I THINK deserts were often ocean beds at one point before everything moved around? Someone can feel free to correct me here. I’m not a geologist or anything.