Question

A white or silver body colour, long, thick hair on the skin are typical characteristics of animals of snowy region. How are these useful to them?

Answer 1

White or silver body colour makes them invisible in the snowy region making them undetectable in the white background by the predators. Long and thick hair on the skin prevents loss of excess heat from the body.

Answer 2

A white or silver body  is used as camouflage. It reduces the chances of the animal being seen by a predator and is a thus survival evolution.

Long and thick hair on the skin enables the trapping lots of air within the furs which is warmed and this helps the animal to protect itself against the extreme cold climate in the region.