Question

Nose bleeding occurs at high altitudes because of

• A. low atmospheric pressure
• B. high atmospheric pressure
• C. extreme cold weather

Answer 1

The correct option is A

low atmospheric pressure

1. The atmospheric pressure decreases with an increase in height.
2. Consequently, air pressure is lower at greater altitudes compared to the surface.
3. At higher elevations, the blood pressure within the human body exceeds the atmospheric pressure, resulting in nose bleeding.

Hence, option (A), is correct.