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Question
What will be the effect of mountain climbing on your RBCs?
Options:
A .  Increase in size
B .  Decrease in size
C .  Increase in number
D .  Decrease in number
Answer: Option C
:
C
The main function of RBCs is to carry and deliver oxygen to body tissues which is essential for cellular respiration.The oxygen saturation is very low in high altitudes. To maintain a constant supply of oxygen to body tissues to function normally, RBCs will increase in number.

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