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Biology 21 Online
OpenStudy (anonymous):

If scientists determine the age of a rock to be three billion years old, what else do they know? the rock came from outside the solar system the rock was part of a comet the Earth is at least three billion years old the Earth is younger than three billion years old

OpenStudy (anonymous):

@jagr2713

OpenStudy (anonymous):

@jagr2713

OpenStudy (anonymous):

c?

jagr2713 (jagr2713):

Correct

OpenStudy (anonymous):

thx :)

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