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  • Can you determine the relative age of the "X" fossil? Explain your answer.
    No. You cannot determine relative age of a fossil that is present in every rock layer.
  • Define "Index Fossil"
    A fossil that scientists use to determine the relative age of rock layers and other fossils.
  • Define "formation," as in a rock formation.
    A rock that is arranged or formed in a certain way.
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