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| the bed or valley of a stream in regions of southwestern Asia and northern Africa that is usually dry except during the rainy season and that often forms an oasis |
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| area with fertile soil left by river floods |
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| facilities that turn petroleum into gasoline and other products |
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| a vast area covered with sand and shifting dunes, as parts of the Sahara Desert. |
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| a small fertile or green area in a desert region, usually having a spring or well. |
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| to make sea water drinkable |
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| dry, treeless, grassy plains |
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| people that live on steppes |
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| underground rock layers in which water flows through |
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| Sediment or dirt from the ocean that compress together |
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| small particles of rich soil |
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| Mineral salts used to make fertilizer |
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| Illegal fishing or hunting |
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| the worlds largest desert in North Africa |
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| Separates Europe from africa |
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| Located on the upper Nile river |
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| A desert with hot summers and very cold winters |
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| Strech southeast through turkey and Iran |
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