DENDROLOGY

Detailed explanation-1: -Tundra winters are long, dark, and cold, with mean temperatures below 0°C for six to 10 months of the year. The temperatures are so cold that there is a layer of permanently frozen ground below the surface, called permafrost. This permafrost is a defining characteristic of the tundra biome.

Detailed explanation-2: -The coldest temperatures are found in the tundra biome. While biome climates can vary significantly in a single day, the tundra by far has the coldest average temperatures of any of the biomes. Some tundras will be snow covered year round.

Detailed explanation-3: -The tropical rainforest biome gets the highest precipitation or rainfall annually. Most regions get at least 200 cm to about 430 cm rain annually. Deserts and tundra get the least amount of precipitation.