NEETBiologyBreathing and Exchange of GasesMCQ+4 / −1
People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at altitude to 5400 metres have around 8 million. This is because at high altitude
- Apeople eat more nutritive food, therefore more RBCs are formed
- Bpeople get pollution-free air to breath and more oxygen is available
- Catmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
- Dthere is more UV radiation which enhances RBC production.
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