The tundra is a biome (or vast plant formation) of the subpolar regions and occupies areas of the hemisphere where the average annual temperature is below zero. Its northern limit is the perennial polar ice (polar ice and ice sheets), while to the south it stops at the first forest formations of the taiga (boreal forest). It is characterized by the lack of tree species, since the growth of trees is hindered by very low temperatures and short stagnation
