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adreamer adreamer
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7 years ago
Why can studies of carbon isotopes be used to detect the presence of past biological activity in rocks?
A) living organisms absorb only the most common carbon isotope
B) living organisms remove all carbon from rocks
C) living organisms absorb certain carbon isotopes more easily than others
D) carbon isotopes are found only in living organisms
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
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19Clyde19Clyde
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7 years ago
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adreamer Author
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7 years ago
Helped a lot
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I appreciate what you did here, answered it right Smiling Face with Open Mouth
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This calls for a celebration Person Raising Both Hands in Celebration
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