authorization - the power or right to give orders or make decisions; he has the authority to issue warrants; deputies are given authorization to make arrests; a place of potency in the state. authority, potency, authorisation, say-so, dominance.
A savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome. Not enough rain falls on a savanna to support forests.
Grassland biomes are ecosystems in which the predominant vegetation type consists of various grasses rather than trees or large shrubs. Grasslands may be divided into several types, including savannas, temperate grasslands, tallgrass prairies, steppes, alpine tundra and flooded grasslands, among others.The type of grassland that occurs in a particular region is based on the latitude, terrain, local climate, precipitation and wildfire regime.emperate grasslands lack the scattered trees that are characteristic of savannas. Temperate grasslands have distinct hot and cold seasons and a moderate amount of precipitation in the late spring and early summer.