Why does the blood comes out of nose and ear at high altitude ? – McqOptions

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1.	Why does the blood comes out of nose and ear at high altitude ?
A.	The blood pressure increases at high altitudes
B.	The atmospheric pressure decreases there
C.	The percentage of oxygen in the air increases
D.	The density of blood decreases at high altitudes
Answer» C. The percentage of oxygen in the air increases

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