Earth Is Made Mostly of Metals and Rocks

question 68

Multiple Choice

Earth is made mostly of metals and rocks. Where did this material come from?

• A)It was made by nuclear fission of uranium and other radioactive materials.
• B)It was produced by nuclear fusion in stars.
• C)It was made by our Sun.
• D)It was produced in the Big Bang.
• E)It was created by chemical reactions in interstellar space.

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