Answer:
pediculosis capitis is the fancy name for it or just infectious i guess
Explanation:
The mouth? MARK THE PERSON THAT SAID THE ANSWER FIRST BRAINLIST IM JUST HELPING HER/ HIM PLS MARK THEM BRAINLIST
It's the same reasoning as why insurance gives better deals to people of greater age.. They are seen to have more experience and be more "mature " to drive safer if you have more years driving your insurance goes down.. same concept