Biology, 04.07.2019 17:50 cupcake3103670

Earth's mantle is a) a layer of molten metal b) a layer of hot rock c) a layer of rock that forms earth's outer skin d) a dence ball of solid metal

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Earth's mantle is a) a layer of molten metal b) a layer of hot rock c) a layer of rock that forms ea...

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Mutations that neither benefit nor harm the organism have effect on the organism survival...