This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The rate of breathing increases while climbing uphill because the atmosphere is very thin at high altitudes and hence the amount of oxygen present in the air deceases. And our body needs more oxygen than what it is getting in normal breathing rate. So to increase the amount of oxygen, the rate of breathing is increased.
2 4 2