When plants and animals live in a geographical region that has a certain climate, that area is a biome. The organisms change in reaction to their environments.
Several biomes have been identified around the world. For example, in the far north, the Arctic tundra is characterized by long winters, short summers and less than 10 inches of precipitation annually. The deciduous forest biome gets 30 to 60 inches of precipitation spread throughout the year. The climate has cold, cool and warm seasons. The tropical rainforest biome is located near the equator. As its name implies, it receives an abundance of rainfall: 60 to 160 per year. Temperatures are warm or hot year round. Other biomes include desert, tropical savannah and taiga.