How does being single affect youths school work?

It depends on the person being single you have time to focus on work and join clubs but if you just got out of a relationship you can be stressed and not do work

Because sometimes there friends might have a boyfriend so they want one and they get desperate and that's all they think about and they slack in class

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.