Elaine Hicks

Physics

5 January, 18:35

When an organism dies, the ratio of carbon-12 to carbon-14 in its body is the same as in every other living thing. However, the amount of carbon-14 is reduced by half every 5,700 years, while the amount of carbon-12 remains constant. If 25% of the carbon-14 present at the time of the organism's death remains in its fossil, approximately how old is the fossil?