Hacktag17
contestada

Rocks in the Earth's mantle contain a higher percentage of _______ and _______ than do rocks in the Earth's crust.

A.
silicon and oxygen
B.
iron and magnesium
C.
magnesium and oxygen
D.
iron and silicon

Respuesta :

Answer:

B.  iron and magnesium

Explanation:

hargooni
The mantle under the crust is about 1,800 miles deep (2,890 km). It is composed mostly of silicate rocks rich in magnesium and iron.

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