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Chemistry, 17.06.2021 18:20 sudotoxic

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

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