Each biome has its characteristic plants and animals found in them. Similarly, a mountain range also has the different types of plants and animals found at different areas of the mountain. The physical and biological condition at various elevations of the mountain range varies.
As we climb up the mountains, the temperature drop and precipitation increases. There tends to be a warmer temperature at the base of the mountain than at the top. That is the reason why the plant and animal species living at each elevation may vary depending on the climatic conditions and the soil pattern. For instance, Canadian Rockies have grassland at the base and ice peaks near the peak.