One fourth of adults are not active at all. true or false?

This is false because more than one fourth of adults are not active. That might also be because that most of jobs could be sedentary when they don't move for hours at a time.

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases. 

Idont understand what youre askimg