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The cores of the terrestrial worlds are made mostly of metal because ______. A. metals sunk to the centers a long time ago when the interiors were molten throughout B. the terrestrial worlds as a whole
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The cores of the terrestrial worlds are made mostly of metal because ______.

A. metals sunk to the centers a long time ago when the interiors were molten throughout
B. the terrestrial worlds as a whole are made mostly of metal
C. the core contained lots of radioactive elements that decayed into metals
D. over billions of years, convection gradually brought dense metals downward to the core

User Thomas Einwaller
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26 votes
It is C because I got it right on the assignment
User Hammad Haleem
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