Biome: A mixed community of plants and animals (a biotic community) occupying a major geographical area on a continental scale. Usually applied to terrestrial environments, each biome is characterized by the similarity of vegetation structure or physiognomy rather than by similarity of species composition, and is usually related to climate. Within a particular biome, the plants and animals are regarded as being well adapted to each other and to broadly similar environmental conditions, especially climate. A group of biomes in which the plant and animal communities exhibit similar adaptations from a biome type. Thus the tropical rainforests of the Congo Basin and Amazon Basin are two biomes within the tropical rainforest0.4501+ biome type. Other biome types respectively include taiga, savannah and hot desert biomes. Needleless to say, large areas of many biomes have undergone transformation by human societies.
The major biomes of the world are:
Tropical Rain Forest, (ii) Tropical Deciduous Forest, (iii) Tropical Scrub Forest, (iv) Tropical Grassland and Savannah, (v) Desert, (vi) Chaparral, (vii) Temperate Deciduous and Rain Forest, (viii) Northern Conifer Forest, (ix) Tundra, and (x) Mounatins. A brief description of the terrestrial biomes has been given in the following.
Equatorial Rain Forest: A narrow fluctuating belt of unsteady, light, variable winds, low atmospheric pressure, and frequent small scale disturbances. It is located near the equator between the trade wind belts of the two hemispheres. However its position, breadth, and intensity are constantly changing. From time to time it disappears completely, especially over the continents. Along its meandering position occur most of the frequent, heavy showers for which the tropics are so well known. The equatorial trough includes the prevailing calms of the Doldrums and the frequently referred to as the Intertropical Convergence Zone (ITCZ).
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