I can measure the age of ancient rocks and fossils, yet I am not a historian. What am I?
Category: Science · Difficulty: expert
Hint: I rely on the decay of isotopes.
Answer
Isotope analysis
Explanation
Radiometric dating uses the decay of radioactive isotopes to determine the age of geological and archaeological samples.
This is a expert science riddle — one of the harder riddles here. The answer is Isotope analysis.
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