Grassland biomes consist mostly of grasses. When it comes to rainfall, they're considered to fall between between a forest and a desert. They don't get enough rain to grow trees like a forest, but since they have so much grass, they get more rain than a desert. Facts about the Grassland Biome: Prairies, pampas, steppes, and savannas are all names for grasslands. Grassland biomes are often found in the transition zone between a forest and a desert. Every Asian desert, in fact, is surrounded by grasslands. The grassland biome covers 25% of the Earth's surface area. With the exception of Antarctica, each continent has a grassland biome. The two types of grasslands are tropical and temperate. Tropical grasslands have warm weather all year, while temperate grasslands have warm weather for part of the year and chilly weather for the rest. Grasslands are ideal for cropping and pasturing since their soil is rich and fertile. Periodic fires, whether intentionally set or unintentiona