Persons living at high altitude will have

Oxygen- dissociation curve of thepersons living at high altitudes is at higher level than those living in the plains.

Oxygen-dissociation curve is at higher level in the persons living at high altitudes than those living in the plains.

Number of RBCs per unit volume of blood is likey to be higher in person living at high altitudes , because

The " mountain sickness" in persons climbing to high altitudes with any aid of oxygen cylinders is due to

The " mountain sickness" in persons climbing to high altitudes with any aid of oxygen cylinders is due to

Why do people living at higher altitudes have higher lung capacity and more red blood corpuscles?

People living in high altitudes have an increased RBC count. Give reason.

Give the reasons for the following statements : RBC count is more in the persons living at high altitudes.