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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 silicon C- iron and magnesium D- magnesium and oxygen
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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 silicon
C- iron and magnesium
D- magnesium and oxygen

User Aditya Landge
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the answer is c.......
User Anna Slastnikova
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The Answer is C - iron and magnesium :)
User Mohini Mhetre
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