Ams carbon 14 dating
After 50,000 years, a fossil won’t have any radiocarbon left in it.Carbon-14 will have all disappeared by radioactive decay.It then uses this information to determine the last time the fossil was respiring carbon (i.e. A radiocarbon dating lab is able to do this using the known “half-life” of carbon-14.
Carbon-14 is present in all living things in minute amounts.
When a plant stops assimilating carbon dioxide or when an animal or human being stops eating, the ingestion of carbon-14 also stops and the equilibrium is disrupted.
From that time forward, the only process at work in the body is radioactive decay.
Recently living materials (the biobased component) have Carbon-14 in them while fossil materials (derived from petroleum) no longer have this weakly radioactive carbon isotope.
Thus all the carbon-14 in the product comes from the biobased component.