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OpenStudy (anonymous):
Radiometric dating is based on knowing: A. how quickly certain isotopes decay B. the half-lives for certain isotopes C. how to measure how much of an isotope is left in a sample D. all of the above
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OpenStudy (anonymous):
@Photon336 @jabez177 @Pinkybottom67 @salemlover352
OpenStudy (lizardman449):
D. I can't even think of how to explain it. But the answer is D.
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