If you go to the northernmost regions of Earth, you will find two biomes- tundra and taiga- that are characterized by long cold winters and short cool summers. The tundra doesn't get much precipitation less than 25 centimeters each year. Yet the area is wet because cold temperatures keep the water from evaporating. Taiga has more precipitation, 30 to 60 centimeters a year. Taiga ecosystems are characterized by evergreen trees called coniferous trees.
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