Question

by The uppermost layer, is knownas Crist
is known as weight of air.​

Answer 1

The uppermost layer of the Earth surface is called as the crust. It comprises mineral constituents on both the continental masses and oceanic floors. Continental masses contains silica and aluminium and it is called as sial. Oceanic floors contain sial and magnesium which is therefore called as sima.

Please forgive me if there are any grammatical errors