Question

what is the composition of the earth's crust?​

Answer 1

Explanation:

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Answer 2

Explanation:

The crust consists of majority of, silica and aluminium and is called 'SIAL', mantle is called SIMA due to the majority of silica and magnesium and is called SIMA, which makes the bed of oceans and the core is called NIFE with excess of Nickel and Iron (Ni + Fe).