OBJECTIVE FORESTRY

Detailed explanation-1: -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. In the tundra summers, the top layer of soil thaws only a few inches down, providing a growing surface for the roots of vegetation.

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.

Detailed explanation-4: -The arctic tundra receives approximately 15 to 25 cm (6 to 10 inches) of precipitation each year, which includes both rainfall/snowfall and melting snow and ice. Alpine tundra typically receives slightly higher amounts of yearly precipitation, around 30 cm (almost 12 inches).