Explanation: Tundra means a “barren land” since they are found where environmental conditions are very severe. There are two types of tundra- arctic and alpine.

• Arctic tundra extends as a continuous belt below the polar ice cap and above the tree line in the northern hemisphere.
• It occupies the northern fringe of Canada, Alaska, European Russia, Siberia and island group of Arctic Ocean. On the South Pole, the tundra is very small since most of it is covered by ocean.

Source: Shankar IAS