Question

animal like sheep and yak have a thick coat of hair give reason​

Answer 1

Answer:

They have a thich coat of hair as it acts like a jacket to them and is used to preserve heat.The layer of hair acts like a natural heat barrier and kepps the body warm.

Explanation:

Answer 2

Answer:

A thick coat of hair helps in trapping a lot of air. As air is a poor conductor of heat, it keep these animals warm.