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The procedure of radiocarbon dating can be used for remains that are up to 50,000 years old.

If radiation collides with molecules in the air or in your body, it throws out of them electrons.

Since atmospheric carbon 14 arises at about the same rate that the atom decays, the Earth's levels of carbon 14 have remained constant.

In living organisms, which are always taking in carbon, the levels of carbon 14 likewise stay constant.

Gamma rays successfully kill microbes that cause food to decay.

Even though it decays into nitrogen, new carbon-14 is always being formed when cosmic rays hit atoms high in the atmosphere.

Consequent errors of shell radiocarbon dates may be as large as several thousand years for river shells.

A form of radiometric dating used to determine the age of organic remains in ancient objects, such as archaeological specimens, on the basis of the half-life of carbon-14 and a comparison between the ratio of carbon-12 to carbon-14 in a sample of the remains to the known ratio in living organisms. A technique for measuring the age of organic remains based on the rate of decay of carbon 14.

If this happens in our body, the cells may die or they may undergo a change called a mutation. Some radiation is due to cosmic rays from outer space.

However, fortunately, our body can withstand low level radiation without ill effects because it is able to repair any damage.




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