Question

What is crust? Do not spammmmmmmmm.

Answer 1

HEYA!!

THE UPPERMOST LAYER OF EARTH SURFACE IS CALLED CRUST.

it is hardened layer, coating, or deposit on the surface of something soft.

it is a suitable for living or livelihood.

Answer 2

The earth is divided into three main layers. The outermost layer is the crust, which is the thinnest layer of the Earth. It has two parts the upper layer is called SIAL and the lower layer is called SIMA.
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