Potassium/argon dating is useful in dating the most ancient sites of human ancestors because:
A) potassium and argon are byproducts of ancient fireplaces
B) potassium and argon were part of the diets of ancient human ancestors
C) stone tools are often made of rock that contains substantial quantities of radioactive potassium and its byproduct argon
D) the half-life of radioactive potassium is 1.3 billion years
Correct Answer:
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