Class 11 NEET Biology Breathing and Exchange of Gases

Question : 50 of 70

Marks: +1, -0

{RBC}

people eat more nutritive food, therefore more ${RBCs}$ are formed
people get pollution-free air to breath and more oxygen is available
atmospheric ${O}_{2}$ level is less and hence more ${RBCs}$ are needed to absorb the required amount of ${O}_{2}$ to survive
there is more UV radiation which enhances RBC production.

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