Answer to Question 1
The two types of hair that comprise wool are:
1 . The coarse outer hair that comes from the primary follicles, and which help keep water away from the skin of the animal
2 . The fine inner hairs that come from the secondary follicles, and which provide the insulation that keep the animal warm
Answer to Question 2
The five components of keratin are:
1 . Carbon
2 . Hydrogen
3 . Oxygen
4 . Nitrogen
5 . Sulfur