Once it dies, it ceases to acquire 14 Cbut the 14 C within its biological material at that time will continue to decay, and so the ratio of 14 C to 12 C in its remains will gradually decrease.
How Does Carbon Dating Work
Three isotopes of carbon are found in nature; carbon, carbon and carbon Despite the name, it does not give an absolute date of organic material - but an approximate age, usually within a range of a few years either way. The relatively short-lived 14 C is constantly renewed by cosmic ray bombardment on atmospheric nitrogen. It must be noted though that radiocarbon dating results indicate when the organism was alive but not when a material from that organism was used. The calibrated date is also presented, either in BC or AD or with the unit calBP calibrated before present - before