A tundra is a biome characterized by an extremely cold climate, little precipitation, low biodiversity, simple vegetation structure, short season of growth and reproduction, and limitation of drainage. In this biome, dead organic material serves as a nutrient pool. There are two kinds of tundra: arctic and alpine tundras. Arctic tundra is located in the northern hemisphere, encircling the north pole, whereas alpine tundra is located at high altitudes on mountains around the world. People do live in tundras, such as the mountain regions of Chile.
In a tundra, tree growth is hindered by low temperatures and short growing seasons. There are two types of tundra: Arctic tundra (occurring in the far Northern Hemisphere) and alpine tundra (occurring at high enough altitude at any latitude on Earth). Tundra vegetation is home to dwarf shrubs, sedges and grasses, mosses, and lichens. Rainfall and snowfall are uncommon. There are tundras throughout Canada, Northern US, New Zealand, Australia, Russia, Scandinavia, and elsewhere. People and animals can survive there.
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