Prairies are considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and grasses, herbs, and shrubs, rather than trees, as the dominant vegetation type. Temperate grassland regions include the Pampas of Argentina, and the steppes of Russia and Central Asia. Lands typically referred to as "prairie" tend to be in North America. The term encompasses much of the area referred to as the Great Plains of the Unit… (More on Prairie)