The document describes the tundra ecosystem, which has no trees due to cold temperatures and is located in far northern regions. Vegetation includes grass, flowers, shrubs, mosses, and lichens that have roots close to the surface to absorb water and help melt snow. Common animals in the tundra are insects, birds like geese and cranes, and mammals such as reindeer, arctic hares, wolves, and polar bears. Permafrost is also present beneath the tundra landscape.