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Biology, 01.09.2019 23:30 Kyliehayden05

Radioisotopes tell scientists that earth is how old? a. 65 million years b. 500 million years c. 4.5 billion years d. 13.4 billion years

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Radioisotopes tell scientists that earth is how old? a. 65 million years b. 500 million years c. 4....
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