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Oxygen is returned to the atmosphere mainly by

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asked Sep 16, 2017 in Biology by Golu (37,045 points) ● 19 ● 145 ● 415

Oxygen is returned to the atmosphere mainly by
(a) burning of fossil fuel
(b) respiration
(c) photosynthesis
(d) fungi

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answered Sep 17, 2017 by Ankit Agarwal (28,847 points) ● 7 ● 32 ● 68
selected Sep 17, 2017 by Golu
 
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Correct answer (c) photosynthesis 

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