Answer:
The main advantage of having small size ear in cold reason is to protect the body heat to fell warm in cold surroundings.
Step-by-step explanation:
- The ear size is directly related to the heat exchange rate of our body. Greater the ear size, greater will be the surface area to dissipate the body heat.
- So, the goats living in warm areas have big size ear, so that they can release more body heat to surrounding to stay cool.
- In the same way in cold areas, goats have to conserve the body heat so they tend to have small sized ear.