biology help please????????????

Biology
Tutor: None Selected Time limit: 1 Day

If it were not for photosynthesis we would all be anaerobic.

Question 3 options:
Feb 28th, 2015

True, if we existed at all. Since we are aerobic organisms, we might not exist, if there were no oxygen. Please best this answer if it is helpful.

Feb 28th, 2015

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Feb 28th, 2015
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Feb 28th, 2015
May 24th, 2017
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