Question

Smoking cigarettes is very dangerous, Tobacco is smoked in cigarettes, cigars

and pipes. Tobacco smoke contains many harmful substances. The most

damaging substances are tar, nicotine and carbon monoxide. Tobacco smoke is

inhaled into the lungs. Tar from the smoke is deposited in the lungs and this

prevents the lungs from working properly.

Which one of the following is a function of the lungs?

A) pump oxygenated blood to all parts of your body

B) transfers some of the oxygen that you breathe to your blood

C) purify your blood by reducing the carbon dioxide content to zero

D) convert carbon dioxide molecules into oxygen molecules.​

Answer 1

Answer:

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