Select all the correct answers.
sully works as a geologist in the southwestern united states. he plans to choose an unstable isotope to find the absolute age of a rock sample. which two aspects must he consider before making his choice?
there should be a sufficient amount of the selected isotope in the rock.
the isotope should be one that decays at a very fast rate.
the isotope must not be found in any neighboring rocks.
the half-life of the isotope must be long enough to capture the age of the rock.
there should be more than one unstable isotope in the rock.