Question

Why most of the mountain climbers carry oxygen cylinder with them

• A. Because as height increases,air pressure increases
• B. Because as height increases,air pressure decreases
• C. At high altitudes,breathing capacity increases
• D. None

Answer 1

The correct option is B Because as height increases,air pressure decreases

As we move upwards through the atmosphere, the height of air column ,above us,would decrease.This would result in a decrease in air pressure at high altitudes.