Biome found in regions where moderate annual average precipitation (25-76 centimeters, or 10-30 inches) is enough to support the growth of grass and small plants but not enough to support large stands of trees. Compare desert, forest.
Region in which the climate is dry for long periods of the summer, and freezes in the winter. Grasslands are characterized by grasses and other erect herbs, usually without trees or shrubs. Grasslands occur in the dry temperate interiors of continents, and first appeared in the Miocene.
A grassland is a grassy, windy, partly-dry biome, a sea of grass. Almost one-fourth of the Earth's land area is grassland. In many areas, grasslands separate forests from deserts. Deep-rooted grasses dominate the flora in a grassland; there are very few trees and shrubs in a grassland, less than one tree per acre. There are many different words for grassland environments around the world, including savannas, pampas, campos, plains, steppes, prairies and veldts.
About one fifth of the Earth's land once had a cover of grass. Grasslands stretch between forests and deserts. Near the forests where rainfall is abundant, trees grow intermixed with tall grasses. As the grasslands stretch away from the forests, the rain decreases and soil conditions change. Then come stretches of treeless tall grass. In semiarid regions near deserts grow short, or bunch, grasses
Grasslands are very generally open and continuous, fairly flat area of grass. Grasslands are often located between temperate forests at high latitudes and deserts at subtropical latitudes. Grasses vary in size from 2.1 m (7 ft) tall with roots extending down into the soil 1.8 m (6 ft), to the short grasses only a few mm. tall.