BIOMES OF THE WORLD
TAIGA 
DESERT
TUNDRA
SAVANNA
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living conditions create unique biomes and ecosystems.
A desert is a landscape where little precipitation occurs and, consequently
The lack of vegetation exposes the unprotected surface of the ground to denudation. About one-third of the land surface of the Earth is arid or semi-arid.
It is noted for its frost-molded landscapes, extremely low temperatures, little precipitation, poor nutrients, and short growing seasons.
Dead organic material functions as a nutrient pool. The two major nutrients are nitrogen and phosphorus.
The tundra is the coldest of the biomes.
The taiga (ty-ga) is the largest land biome.
Winters in the taiga are cold and the summers are warm. The taiga gets between 15 and 30 inches of precipitation a year.
It stretches across a large part of Canada, Asia and Europe and can be found between the tundra and deciduous forests.
It is a transitional biome between those dominated by forests and those dominated by grasses.
The Savanna biome is associated with climates having seasonal precipitation accompanied with a seasonal drought.
Temperate forest
The Savanna biome is characterized by an extensive cover of grasses with scattered trees.
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FOREST
Well-defined seasons with a distinct winter characterize this forest biome.
Moderate climate and a growing season of 140-200 days during 4-6 frost-free months distinguish temperate forests.
Temperate forests occur in eastern North America, northeastern Asia, and western and central Europe.