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OpenStudy (anonymous):
Which of the following is a method used to obtain the absolute age of a rock or fossil?
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OpenStudy (anonymous):
Carbon dating is used to determine the age of biological artifacts up to some 50,000 years or something crazy like that.
OpenStudy (unklerhaukus):
Radiocarbon dating is used for determining the relative portions of the various radionuclides, some of isotopes are unstable and hence, in older rocks, their ratio will be less
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