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May 4, 2016

Homework Help: biology - natural selection

Posted by orpheus on Thursday, January 2, 2014 at 9:49pm.

Which of these is the foundation for relative dating?
A. Earth is very old.
B. Deeper rock strata are older.
C. Radioisotopes decay at a constant rate.
D. Organisms can be closely related to each other.

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