The term for the flat, treeless region predominantly found in Siberia is tundra. This biome is characterized by its cold climate, permafrost, and minimal vegetation, primarily consisting of lichens, mosses, and low shrubs. Tundra regions experience a short growing season, resulting in sparse plant life. The harsh conditions support limited wildlife, including species adapted to extreme cold, such as reindeer, and various migratory birds. Tundra ecosystems are crucial for climate regulation and act as carbon sinks. They are sensitive to climate change, facing significant threats from rising temperatures and human activity.