Do carbon dating equations
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.
Radiocarbon dating can be used on samples of bone, cloth, wood and plant fibers.
If the fossil has 35% of its carbon 14 still, then we can substitute values into our equation.
So, the fossil is 8,680 years old, meaning the living organism died 8,680 years ago.
The stable form of carbon is carbon 12 and the radioactive isotope carbon 14 decays over time into nitrogen 14 and other particles.
Scientists are looking for safe ways for disposing plutonium.
At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues.