The initial number of carbon-14 atoms in the organism at death is

However, at the moment of death, the amount of carbon-14 begins to decrease because it is unstable, while the amount of carbon-12 remains constant in the sample. Half of the carbon-14 degrades every 5,730 years as indicated by its half-life.

The initial number of carbon-14 atoms in the organism at death is 500

After 11,460 years, there will be 125 carbon-14 atoms in the organism

After 25,000 years, there will be 24.298 carbon-14 atoms in the organism.

Step-by-step explanation:

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