What is a biome?

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A biome is an ecological space characterized by different geographical characteristics such as average temperatures and annual rainfall, as well as plant and animal communities living there. The major terrestrial biomes include forest, forest, prairie, savanna, taiga, steppe, desert and tundra. The forest, with an average annual temperature of 25 º C and average annual rainfall of 3,000 mm, has species of trees that can reach 40 meters, shrubs, epiphytes, lianas and ferns. The forest, with vegetation dominant tree, is marked thermal average of 23 º C and an average rainfall of 1,000 mm per year, on the other hand, the field has temperatures and less precipitation: 20 º C and 600 mm, respectively, and herbaceous plants. This vegetation also dominates the savanna, which has the same rainfall to the grassland, but with an average temperature of 23 º C. The taiga, with summers and winters 19 º C 30 º below zero, has an average annual rainfall of 450 mm and vegetation of conifers. In the steppe dominated by grasses, with an average temperature of 12 º C and annual rainfall of 250 mm. The desert is less than 250 mm rainfall annually, 30 º C temperature and xerophytic herbaceous vegetation. The tundra, with mosses and lichens, has a maximum temperature of 10 º C and average rainfall of 250 mm throughout the year.

Are there any limits placed among biomes?

No, biomes are separated by transition area, where rates of soil and climate are changing gradually.

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