Question

The polar climate zone is the coldest of the three zones. Why is this?

Answer 1

The polar climate zone is located between about 67°N latitude and the North Pole-this latitude zone receives less sunlight than the other two latitude zones.

Answer 2

it is not necessarily a lack of sunlight, it is a lack of strong sunlight to provide warmth. Far North there are some times when the sun is up for almost all of the time. However, because the north is so distant from the sun, the light that reaches the polar climate zone provides very little heat