What is the cause of altitude sickness?

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Question

(C) Altitude sickness occurs when a person travels to high altitudes (e.g.,Rohtang Pass near Manali or Mansarovar in Tibet). At high altitudes,the atm

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Decrease in atmospheric pressure at high altitudes

Vedclass · Answer

(C) Altitude sickness occurs when a person travels to high altitudes (e.g.,Rohtang Pass near Manali or Mansarovar in Tibet). At high altitudes,the atmospheric pressure is low,which results in a decrease in the partial pressure of oxygen $(pO_2)$. Due to this low oxygen availability,the body does not get enough oxygen,leading to symptoms like nausea,fatigue,and heart palpitations. Therefore,the correct cause is the decrease in atmospheric pressure at high altitudes.

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