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These samples are carefully cataloged and analyzed with a mass spectrometer. The mass spectrometer is able to give information about the type and amount of isotopes found in the rock. Scientists find the ratio of parent isotope to daughter isotope. By comparing this ratio to the half-life logarithmic scale of the parent isotope, they are able to find the age of the rock or fossil in question. Radioactive dating is an absolute dating tool. Asked in Planetary Science, Planet Earth How have scientists used radioactive dating to show that earth is about 4. Asked in Chemistry Radioactive dating enables geologists to determine what.

We also gave you credits in the post there. The most talented of them all.

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People can argue all they want. Im a bit suprised knowing that chen and lay have low on biasvote bcs my bias is them.

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