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Certain _____ substances have been used to determine the absolute age of objects up to several _____ years.

A. stable; billions
B. stable; millions
C. unstable; billions
D. unstable; millions

2 Answers

1 vote

the correct answer is (b)stable;millions



User Gregory Magarshak
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4 votes

The correct answer would be B
User Samsamara
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