FACTS ABOUT HAIR
Good morning, and welcome to this lecture on hair, which is a part of the human biology course. This lecture covers a number of facts about hair, its structure and what can affect the general health of hair.
So, first of all, what is hair and why do we have it? If we look back at, our ancestors will see that they had a lot more hair on their bodies than we do now. And there are or were two main reasons for having hair.