Why does radiometric dating allow researchers to determine the age of fossils?
A) Radioactive isotopes are incorporated into living organisms easier than the corresponding non-radioactive isotope.
B) The half-life for all isotopes are all long, in the order of years.
C) The "parent" isotope decays into the "daughter" isotope at a fixed rate.
D) All radioactive isotopes have the same half-life.
E) All elements incorporated into living organisms have radioactive isotopes.
Correct Answer:
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