Tundra is a cold, treeless biome with frozen ground called permafrost. The land is often covered with low plants such as mosses and grasses. Trees do not grow easily in these conditions. The climate is cold for most of the year.

Tundra regions are found in Arctic areas and high mountain regions around the world. They have long, cold winters and short summers. The tundra supports plants and animals adapted to these conditions. It is part of Earth’s polar and high-altitude environments.