The urinary system, also known as the renal system or urinary tract, consists of the kidneys, ureters, bladder, and the urethra. The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and regulate blood pH.
The final stage of stress is Exhaustion
Yes smoking damages your lungs and slowly kills you
This is really a question you answer on a personal basis. But your health class would tell you to say something along the lines of refusing and telling the people that what they're trying to force you into is a bad idea.