Why you have pubic hair and arm pit hair?

Hi! Well, if you havent learned this in health class or from your parents yet, I guess Ill tell you. Its exactly the same reason you have eyelashes. Eyelashes keep the small dirt or unwanted things that fly to your face during the day and night out of your eye. They eyelashes catch the small items and protect your eye like a jail cell keeping the bad away from the good. So for pubic hair, It works the same way. For armpit hair, It is one of those kind of useless things in some ways. The armpit hair is supposed to trap the sweat in. But that just makes it stink. Weird huh? Well hoped this helped!