(01.08 lc)which of the following exercises will increase arm strength?

stretching
pull-ups
sit-ups
distance running

B) Pull-ups

Pull-up's increase your arm strength by pulling the weight of your body by just your arms that way making your arms stronger. Hope this helped.

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.