Ahigh school junior stated in health class that women cannot get pregnant if the man is still in the plateau phase of the sexual response cycle. how should the teacher respond to this?

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. 

Band cthe nucleus of the atom