What are the conditions in a tundra?

A tundra is characterized by cold conditions, with an annual average temperature of 5 degrees Celsius (41 degrees Fahrenheit). Precipitation (mostly in the form of snow) is less than 100 mm (3.94 in). There is a brief summer with temperatures above freezing for only 6-10 weeks. Plant growth is explosive during the summer, due to almost 24 hour daylight. Tundras are barren and treeless.

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