Citation:
The arctic tundra is a biome characterized by extremely cold temperatures, low biodiversity, long winters and short summers. It's found in the northernmost parts of North America, Europe, and Asia near the North Pole.
A thick subsurface layer of soil that remains frozen throughout the year.
Biome: A large naturally occurring community occupying a major habitat e.g., forest or tundra.
Variety within species, between species and ecosystems.