Hair

Hairs are not nerves,hairs grow by the nerves of others on the scalp.Hairs are used on animals to keep them warm and to keep diseases away from them.Humans don't really need hair other than for keeping there head warm and to protect themselves from diseases. Hair has different steps in growing.First it needs to rest ,grow,and rebulld.This article I believe isn't very impactful on the world,but does give some basic knowledge on hair.Like for me now knowing that hair doesn't have nerves at the bottom of it but at the scalp that helps it grow.