Why is tundra sometimes referred to as a cold desert?
1) All of the tundra as an average annual temperature in the range of -5° C to -15° C.
2) Because the average annual precipitation of tundra is similar to that of a desert.
3) Tundra is only separated from the desert by one biome (grasslands).
4) The variation in the precipitation levels is lower in the tundra than the boreal forest.