AP BIOLOGY

Detailed explanation-1: -The northern polar region, called the Arctic, encompasses the Arctic Ocean and a portion of some surrounding land masses. The southern polar region, called the Antarctic, contains the continent of Antarctica and areas of the surrounding Southern Ocean.

Detailed explanation-2: -The Arctic (/ˈɑːrtɪk/ or /ˈɑːrktɪk/) is a polar region located at the northernmost part of Earth.

Detailed explanation-3: -Polar habitats cover the top and bottom of planet Earth at the North and South Poles. The North Pole is surrounded by the Arctic Ocean. There isn’t any land here, just a group of continually shifting ice sheets. Parts of Canada and Greenland are near the North Pole.

Detailed explanation-4: -polar ecosystem, complex of living organisms in polar regions such as polar barrens and tundra. Polar barrens and tundra are found at high latitudes on land surfaces not covered by perpetual ice and snow. These areas lying beyond the tree line comprise more than 10 percent of the Earth’s land surface.

Detailed explanation-5: -Tundra takes up a lot of the area of polar habitats. It’s the only place where any plants can grow, but the ground only thaws just enough for short grasses and moss – tree roots can’t go as far down into the ground as they need to because it’s frozen.