[15 POINTS!] How is relative-age dating used to determine the ages of fossils?
A. by observing the formation of sedimentary rocks
B. by using radioactive isotopes
C. by estimating the number of fossils in a particular region
D. by the formation of igneous rocks
E. by identifying the way the fossils were formed
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[15 POINTS!] How is relative-age dating used to determine the ages of fossils?
A. by observing the...
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