Question

On average, an adult human being at rest breathes 15–18 times per minute. The

breathing rate, however, may differ under different conditions. Arrange the

following activities given below in order of increasing breathing rates and give a

reason for your answer.

Sleeping , cycling ,brisk walk , watching T.V​

Answer 1

Explanation:

Sleeping > Watching > T.V. > Brisk Walk > Cycling 

The breathing rate becomes faster when we are working. The more is the strenuous work, the more is the breathing rate, and so, that sufficient oxygen can reach to the cells.