Why is the C-14/C-12 ratio used to date once-living organisms?
O A. The amount of C-12 changes when an organism dies.
O B. An organism stops taking in carbon when it dies.
C. The half-life of C-14 changes when an organism dies.
O D. C-12 becomes radioactive when an organism dies.
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Why is the C-14/C-12 ratio used to date once-living organisms?
O A. The amount of C-12 changes when...
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