Our planet is varied. There are deserts, rain forests, oceans, and mountains. There are places where the temperature rarely rises above 0°F, and other places where the temperature hardly ever dips below 100°F.
Some places are home to rhinoceroses, while others include elk or polar bears or kangaroo rats. Areas with similar climates, geography, animals, and vegetation are called biomes. Each biome on Earth has a unique combination of conditions that allows certain life forms to thrive there. Not all scientists agree on exactly how to divide Earth into biomes, but here is one popular way.