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which best helps scientists determine the age of fossils? a. physical traits b. genetic makeup c. reproductive strategy d. radioactive isotopes
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which best helps scientists determine the age of fossils? a. physical traits b. genetic makeup c. reproductive strategy d. radioactive isotopes

User Freestyle
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5 votes

the correct answer is radioactive isotopes

User Astasiak
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5 votes
it would be the genetic make up of an organism
User Paul Trmbrth
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