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Carbon is naturally in all living organisms and is replenished in the tissues by eating other organisms or by breathing air that contains carbon.At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues.Isotopes participate in the same chemical reactions but often at differing rates.When isotopes are to be designated specifically, the chemical symbol is expanded to identify the mass (for example, C is not stable.Radiocarbon dating can be used on samples of bone, cloth, wood and plant fibers.The half-life of a radioactive isotope describes the amount of time that it takes half of the isotope in a sample to decay.Gen1Denying Evolution Evolution=Millions Of Years Your Imagination Creation Answers Book 20 Chapters (More than 60 of the most asked questions about Creation, evolution, and the book of Genesis answered!

Nearby, workers also uncovered an assortment of thick and heavily fossilized bones.

In succeeding years many further specimens have been found, not only in the German Neander Valley, but in with rickets, caused by a deficiency of vitamin D.

He considered that the flattened head was caused by repeated powerful blows (his examination was done pre Darwinism 1859).

As a result it is always undergoing natural radioactive decay while the abundances of the other isotopes are unchanged.

Carbon-14 is most abundant in atmospheric carbon dioxide because it is constantly being produced by collisions between nitrogen atoms and cosmic rays at the upper limits of the atmosphere.