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Lightning
Grade 5
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Places to Live Around the World

Six major ecosystems, or , are located around Earth. The desert has soil that is rich in . Prairie dogs and snakes live in American . The cold biome in the far north is the . Here, a layer of permanently frozen soil called keeps water from flowing downward. The greatest diversity of can be found in tropical rain forests. Mostly conifers grow in the . Deciduous forests have many different trees that lose their each autumn.