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Home Q & A Board Biology-Related Homework Help Environmental and Conservation Biology
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melaa melaa
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6 years ago
The source of all carbon in living organisms is
A) simple sugars.
B) carbon dioxide from atmosphere and water.
C) carbon-fixing bacteria.
D) sedimentary rocks.
Textbook 
Elements of Ecology

Elements of Ecology


Edition: 9th
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redlabourredlabour
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6 years ago
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