Question

What do you mean by the crust if the earth?

Answer 1

The crust is the uppermost layer of the earth's surface. It is the hardest and the thinnest layer where all living beings exist...
Hope it helped....... Please excuse if any mistakes..

Answer 2

it is the uppermost layer of the earth surface
where all living organisms live
it is used for agriculture and construction
it is the thinnest layer of earth

hope it helps you