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            |  | A particular spatial 
            arrangement of plants, acting as a unit with internally consistent 
            characteristics that distinguishes it from contiguous formation  
            (e.g.: a forest, a prairie, a shrub-land etc.. ) |  |  
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                | A vegetable formation may extend over hundreds 
                of thousands of square kilometers of the Earth's surface and has 
                distinctive characteristic which make it easily recognizable. 
 Formations can be distinguished from one place to another.
 
 See also: 
                Ecosystem, 
                biome, 
                community
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