1.

Because of smoking which kind of changes occurs in blood ?

A. Proportion of CO2 decreases & in Hb also CO2 deoreases
B. Propotion of O2 decreases &in Hb propertion of O2 increases
C. Proportion of O2 increases & in Hb proportion of O2 decreses.
D. Proportion of CO2 increases & in Hb proportion of O2 decreses.
Answer» E.


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