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**LS 10:**
===The major terrestrial ecosystems are classified into units called biomes. Biomes are large regions characterized by certain conditions, including a range of climate and ecological communities adapted to those conditions. The major terrestrial ecosystems are:===
 * ====Desert====
 * Forest[[image:biomes-nail/Desert_after_Rain.jpg width="198" height="300" align="right" caption="Canyonlands National Park (San Juan county, Utah, United States) U.S. National Archives"]]
 * Coniferous
 * Deciduous
 * Rainforest
 * Grassland
 * Tundra