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ARC-Easy / Mercury_177678 / To calculate the relative age of rocks, geologists use the rate of radioactive…

Problem

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question

To calculate the relative age of rocks, geologists use the rate of radioactive decay of isotopes present in their samples. What is the term used for the original amount of the elemental isotopes being investigated?

choices

  • rare earth isotopes
  • son isotopes
  • daughter isotopes
  • parent isotopes

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