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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2006
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Q)

People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude of 5400 metres have around 8 million. This is because at high altitude-


( A ) Atmospheric $O_2$ level is less and hence more RBCs are needed to absorb the required amount of $O_2$ to survive
( B ) People get pollution-free air to breathe and more oxygen is available
( C ) People eat more nutritive food, therefore more RBCs are formed
( D ) There is more UV radiation which enhances RBC production

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