6th grade science

Which is a method of relative dating?





A.


examining historical records to determine when a volcano erupted


B.


using fossils to determine the oldest rock layer in a canyon


C.


measuring the depth of tree bark


D.


using radioactive isotopes to calculate the age of a rock

I think that it's b.

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  1. the answer is b

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  2. yes, the answer is B. Relative dating is used on objects without radioactive isotopes

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    posted by michael
  3. i think itg is c. :)

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    posted by bianca
  4. i actulay think it is b. :)

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    posted by bianca
  5. Defenitly B!

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    posted by Ala

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