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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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HROWL HROWL
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7 years ago
Recall from your reading about the radiometric time scale to put the following isotopes in order of use, from oldest rock to youngest.

Carbon-14


Potassium-40


Samarium-147


Thorium-232


Uranium-235


Uranium-238


Rubidium-87
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bio_manbio_man
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7 years ago
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HROWL Author
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7 years ago
Thank you, thank you, thank you!
dedricgard
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You make an excellent tutor!
macbookpro1
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2 hours ago
Just got PERFECT on my quiz
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