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(B) At high altitudes,the atmospheric pressure is low,which results in low oxygen availability (hypoxia). To compensate for this,the human body underg

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Higher red blood cells,more $Hb$

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(B) At high altitudes,the atmospheric pressure is low,which results in low oxygen availability (hypoxia). To compensate for this,the human body undergoes physiological adaptations. The body increases the production of red blood cells $(RBCs)$ to enhance the oxygen-carrying capacity of the blood. Additionally,the concentration of hemoglobin $(Hb)$ increases to bind more oxygen efficiently. Therefore,people living at high altitudes typically have a higher count of red blood cells and higher levels of hemoglobin.

Many tribes live in the high altitude of the Himalayas. What physiological adaptation do they exhibit?

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