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hermiz hermiz
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6 years ago
More than 96% of the mass of living cells are made of
A) carbon and hydrogen
B) carbon
C) carbon, hydrogen, oxygen, and nitrogen
D) hydrogen and oxygen
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
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Life in the Universe, 4/E (Bennett, Shostak)
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DonskoyDonskoy
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6 years ago
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hermiz Author
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6 years ago
You make an excellent tutor!
shangshang
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Yesterday
Thank you, thank you, thank you!
avance37
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2 hours ago
Correct Slight Smile TY
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