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The percentage of oxygen in the air is 21.0%, but the percentage in air exhaled while breathing is A. 21.0% B. 18.0% C. 16.0% D. 14.0% E. none of the above
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The percentage of oxygen in the air is 21.0%, but the percentage in air exhaled while breathing is

A. 21.0%
B. 18.0%
C. 16.0%
D. 14.0%
E. none of the above

User Stinepike
by
4.1k points

2 Answers

4 votes

Answer:

e

Step-by-step explanation:

User Uvesten
by
4.4k points
2 votes

Answer:

its c

Step-by-step explanation:

User YaW
by
4.9k points
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