What is the breathing rate of a normal adult (approx)?

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A 5–10/min
B 12–20/min
C 25–30/min
D 40–50/min

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Answer: B. 12–20/min

A healthy adult at rest breathes about 12 to 20 times every minute. One breath means breathing in once and breathing out once. The rate goes up during exercise.

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What is the breathing rate of a normal adult (approx)?

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