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Which isotope of carbon is used in radioactive carbon dating who dating britney spears

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When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon 14.Experts can compare the ratio of carbon 12 to carbon 14 in dead material to the ratio when the organism was alive to estimate the date of its death.

At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues.Scientists use a technique called radiometric dating to estimate the ages of rocks, fossils, and the earth.Many people have been led to believe that radiometric dating methods have proved the earth to be billions of years old.Recall that atoms are the basic building blocks of matter.Atoms are made up of much smaller particles called protons, neutrons, and electrons.Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material.