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Fossils and Evidence of Common Ancestry
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Grade 6
6.98 Fossils and Evidence of Common Ancestry
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Ancient DNA is not available for most fossils. How can scientists still study common ancestry?
A
They can ignore the fossil record and study only living species.
B
They cannot study ancestry at all without DNA.
C
They can compare fossil structures and their positions in rock layers.
D
They can use only body size.
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