FLAT describes the terrain of the arctic tundra. It is prone to stagnant water.
The tundra can be defined as a class of biome in which tree growth is restrained by extremely low temperatures and short growing seasons.
The arctic tundra biome is composed of flat land extensions of low-growing plants.
Land with perma-frost is the tundra biome, which is located in regions where the annual temperatures is below - 5°C.
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