| 1. | Carbon 14 dating proves occupation since 4470 BC ( Neolithic ).
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| 2. | One of our first products was amino acids tagged with carbon 14.
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| 3. | Carr's team established the age of the canals with carbon 14 dating.
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| 4. | Does carbon 14 just disappear, or does it become carbon 12 over time?
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| 5. | This archeological site has yielded a carbon 14 dating of 7100 BC for its Neolithic levels.
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| 6. | We have ( human ) black hair, carbon 14 dated from 50, 000 years ago.
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| 7. | This site is approximately dated to ca . 1860-1545 BCE based on calibrated carbon 14.
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| 8. | A Carbon 14 test, confirmed in 1983, dated the time of death to the Maglemosian culture.
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| 9. | I know carbon 14 decays over time, so there's less of it as time passes.
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| 10. | An important asset for him was the ready availability of carbon 14 after 1945 because of wartime nuclear research.
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