Solution:
The above statement is true.Generally, wool-yielding animals bear hairs on their body. Their thick coat of hair traps a lot of air. We know the air is a poor conductor of heat. So, hairs keep these animals warm. The wool comes from sheep, goats, yak and some other animals. These wool-yielding animals bear hair on their body as hair keeps these animals warm, and wool is obtained from these hairy fibres. Also, their parents are specially chosen to give birth to sheep with only soft under hair.
