The south polar region's elevation is higher than the north polar region, because the south polar region is a continent and the north polar region is ocean.

the north of Siberia is in the polar region.

The opposite of a tropical region is a polar region.

The polar region around the North Pole is called the Arctic and the polar region around the South Pole is called the Antarctic Region

The Arctic and antarctic are the two polar ice regions. Iceland does exist, but is not considered to be a polar region.