Q. Why do human beings face difficulty to breath in high elevations?
A) Lower % of $O_{2}$
B) Temperature lower
C) High pressure
D) Low $\rho O_{2}$
Explanation
Inspiration takes place when those is negative pressure of $O_{2}$ inside the body than outside. In the mountains, there is less pressure of $O_{2}$ (negative) than inside, that’s why, breathing is difficult in mountain regions
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.