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Dwa, odprowadza tenże wapń z miejsc gdzie “leniwie” się osadził (ponieważ witaminy tej zabrakło) czyli z tkanek miękkich tj. Chodzi o to, że przyjmując witaminę D ciało tworzy zależne od K2 proteiny, które regulują poziom wapnia.

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Thus the ratio of radiocarbon to stable carbon in living animal tissue is also virtually the same as the ratio of radiocarbon to stable carbon in the atmosphere at any given time.

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.An age could be estimated by measuring the amount of carbon-14 present in the sample and comparing this against an internationally used reference standard.The impact of the radiocarbon dating technique on modern man has made it one of the most significant discoveries of the 20th century.Radiocarbon dating is a valuable tool to chronologists and archaeologists.It provides an objective, absolute method of determining a sample's age with quantifiable precision.This tendency to decay, called radioactivity, is what gives radiocarbon the name radiocarbon.