The byproduct of the metabolism of cyanobacteria that had the most effect on the further evolution of life is ____
a. oxygen gas
b. carbon dioxide
c. water
d. nitrogen gas
e. hydrogen gas
ANSWER: a
Biology & Microbiology
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The process by which food is broken down and absorbed through the lining of the gastrointestinal tract
What will be an ideal response?
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Which cells complete their maturation in the bone marrow?
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