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The innermost layer of the Earth, which is composed of iron and nickel metal, is the ________.

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The innermost layer of the Earth, which is composed of iron and nickel metal, is the ________.

The innermost layer of the Earth, which is composed of iron and nickel metal, is the ________.
a. lithosphere
b. crust
c. mantle
d. core

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Madam Author

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Thanks for your help!!

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