Question

Why does the rate of breathing increase while uphill at a normal pace in the mountains? Give reasons.
​

Answer 1

Answer:

While uphill more energy is required.

To compensate the required energy, the rate of respiration increases.

At higher levels the percentage of oxygen decreases. So to get more oxygen the rate of respiration increases.

Due to this, the rate of breathing increases while uphill at a normal pace in the mountains.

Answer 2

Answer:

Because amount of oxygen decreases and pressure gradually increases