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Biology, 29.10.2020 16:30 zealandcui
A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6.25% of the original radioactive atoms remain? 5 million years old 6.25 million years old 3.75 million years old6 2.5 million years old 1.25 million years old 625 thousand years old
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A radioactive substance has a half-life of 1.25 million years. What is the age of a rock in which 6....
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