50,000 years useing carbon 14
plants
No, carbon dating does not use nuclear fusion. Carbon dating is a method used to determine the age of organic materials by measuring the remaining levels of a radioactive isotope called carbon-14. This process involves the decay of carbon-14, not nuclear fusion.
fossils
Because they want to sound smarticles
Caebon-14 is a radioactive isotope and can decay.
to allow the correct amount of oxygen to enter and leave the substance
Carbon-14 undergoes beta decay, becoming nitrogen-14 which is stable.
plants and animals die and then decay to release carbon compound in then
Carbon dating
Carbon dating works by measuring the amount of radioactive carbon-14 in a sample. Carbon-14 is present in all living organisms and decays at a known rate after death. By comparing the amount of carbon-14 remaining in a sample to the amount in living organisms, scientists can determine the sample's age.
The amount of radioactive carbon in the body is fixed at the time of death. After death, the carbon would the begin to decay.
The rate of radioactive decay of various isotopes provide a variety of different timebases for "clocks" that can be used for measuring the ages of samples ranging from as little as a few hundred years (e.g. carbon dating) to as long as billions of years (e.g. uranium-lead dating).