Let X represent an atom and X* its radioactive isotope. Assume both are taken up by living organisms. If the half-life of X* is 4,000 years, how much X* will be present in the remains of an organism that is 16,000 years old

Question:Let X represent an atom and X* its radioactive isotope. Assume both are taken up by living organisms. If the half-life of X* is 4,000 years, how much X* will be present in the remains of an organism that is 16,000 years old

1.as much as a living organism

2.4 times as much

3.one-fourth as much

4.one-sixteenth


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