Bodies of water
In the temperate grasslands the rainfall per year ranges about from 10-30 inches. In tropical and sub-tropical grasslands the rainfall per year ranges about from 25-60 inches per year The amount of rainfall is very important in determining which areas are grasslands because it's hard for trees to compete with grasses in places where the uppers layers of soil are moist during part of the year but where deeper layer of soil are always dry.
Some of plant life on the North American prairie are Buffalo Grass, Sunflower, Crazy Weed, Asters, Blazing Stars, Coneflowers, Goldenrods, Clover, and Wild Indigos. Popular flowers found on the North American prairie are Asters, Blazing Stars, Goldenrods, Sunflowers, clovers, and Wild Indigos.