Final answer:
Wool is the material traditionally used to make sweaters and hats, but it is now also being used to adorn hair. It is a fiber from shearing sheep, llamas, or yak, and is woven into clothing that retains its warmth even when wet.
Step-by-step explanation:
Wool is the material traditionally used to make sweaters and hats, but it is now also being used to adorn hair. Wool is a fiber from shearing sheep, llamas, or yak, and is woven into clothing that retains its warmth even when wet. The wool is washed, spun into yarn, dyed, and usually woven on large looms.