What biome would you most likely find plants and animals that are adapted to survive in extremely cold temperatures?

You would most likely find plants and animals adapted to survive in extremely cold temperatures in the tundra biome. This biome is characterized by its cold climate, strong winds, and a short growing season, with permafrost underlying the soil. Vegetation is typically low-growing, including mosses, lichens, and small shrubs, while animals such as polar bears, arctic foxes, and migratory birds have specialized adaptations to thrive in these harsh conditions.