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| | Ecozone - Encyclopedia, History, Geography and Biography |
 | | Correspondingly, they are distinguished by different climates, landforms, soil units, plant formations and biomes, and land use systems. |
 | | In the (hierarchical) systems of natural regions, whose basic unit is the ecotope, the term ecozone represents the highest class heading. |
 | | A few of the ecozones are subdivided into comparatively independent subregions or ecoregions, such as the Polar subpolar zone, which is divided into the glacier-covered regions (ice deserts), the frost debris regions and the tundras. |
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