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Home Q & A Board Science-Related Homework Help Physics Astronomy
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adreamer adreamer
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6 years ago
A sample of an ancient sedimentary rock contains slightly less of the isotope carbon-13 than found in inorganic material. One possible explanation for this is that
A) it was a meteorite that fell from the sky
B) some kind of radioactive decay occurred in it in the past
C) it used to be at the bottom of an ancient ocean
D) some kind of biological activity occurred in it in the past
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
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19Clyde19Clyde
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6 years ago
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adreamer Author
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6 years ago
Correct again
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