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December 21, 2014

Homework Help: 6th grade science

Posted by luv history on Monday, December 3, 2012 at 3:03pm.

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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