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In heavy smoker the alveoli of the lungs are enlarged and damaged which reduces the surface area of the exchange of respiratory gases this condition is called
A. Asthma
B. Silicosis
C. Emphysema
D. Anosmia

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Correct Answer - C
Tabacco smoke may break down the walls of alveoli of the lungs, decreasing the surface area for gas exchange.Causing emphsyseam.

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