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What percentage of oxygen is contained in exhaled air?
Classroom
Biology Classroom
Neco
Neco 2001
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What percentage of oxygen is contained in exhaled air?
SchoolNGR Classroom
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
A
21%
B
16%
C
4%
D
0.04%
E
Less than 0.01%
Show Answer
Show Explanation
Correct Answer:
Option B
Explanation:
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