Rocks in the Earth's mantle contain a higher percentage of _______ and _______ than do rocks in the Earth's crust. a. iron and silicon b. iron and magnesium c. silicon and oxygen d. magnesium and oxygen

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asked Jul 16, 2018 50.2k views

3 votes

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

a. iron and silicon
b. iron and magnesium
c. silicon and oxygen
d. magnesium and oxygen

Social Studies
middle-school

Jajula Siva asked

by Jajula Siva

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5 votes

Letter b is the answer

Ady Ngom answered Jul 18, 2018

by Ady Ngom

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6 votes

Iron and magnesium we all know that

Nerxis answered Jul 22, 2018

by Nerxis

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