SOLAR SYSTEM

UNIVERSE

ATMOSPHERIC BASIC PROPERTIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why is it difficult to breathe at high altitudes?
A
Because you are closer to the sun, the higher you go.
B
Because there is less of the gasses we need to breath the higher you go.
C
Because there is more carbon dioxide, the higher you go.
D
Because there is no oxygen in the troposphere.
Explanation: 

Detailed explanation-1: -Although the percentage of oxygen in inspired air is constant at different altitudes, the fall in atmospheric pressure at higher altitude decreases the partial pressure of inspired oxygen and hence the driving pressure for gas exchange in the lungs.

Detailed explanation-2: -At higher altitudes, the air becomes thinner hence the amount of oxygen is less. Hence, there is a decrease in atmospheric pressure as well as the oxygen content of the atmosphere resulting in a low partial pressure of oxygen than that of carbon dioxide resulting in difficulty in breathing.

Detailed explanation-3: -The air at higher altitudes is colder, less dense, and contains fewer oxygen molecules. This means that you need to take more breaths in order to get the same amount of oxygen as you would at lower altitudes. The higher the elevation, the more difficult breathing becomes.

Detailed explanation-4: -Altitude sickness results from a rapid change in air pressure and air oxygen levels at higher elevations. You may have symptoms if you travel to a high elevation without giving your body time to adjust to less oxygen. Even if you’re physically fit, you can still experience altitude sickness.

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