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How can an isotope like carbon 14 be used to date dead organisms
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How can an isotope like carbon 14 be used to date dead organisms

User FredMan
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 a ration of Carbon 12 and 14 are in every living thing.  Once dead the Carbon 14 ceases to be replaced.  They can then measure the ration of C 12 to 14 to date the organism.
User Andrzej Doyle
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