a
21%
b
16%
c
4%
d
0.04%
e
Less than 0.01%
Explanation
Correct Option
bNo explanation available
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Discussions (6)

Culzstudy
6 years ago
vickyf i get what u are trying to say but study the quedstion well, they said the percentage of oxygen in exhaled air and not in the atmosphere. the ans is B

001shedy
1 year ago
The percentage of oxygen contained in exhaled air is approximately 16-17%. This is lower than the percentage of oxygen in inhaled air, which is approximately 21%. The decrease in oxygen percentage is due to the body's extraction of oxygen from the inhaled air for metabolic purposes.
so option B is correct ✅

