Geography

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Across
  1. 2. converts crude oil into useful products
  2. 3. When winds evaporate the moisture in the soil, salts with chemicals in them remain, creating this
  3. 5. area in a desert where vegetation is found
  4. 6. small pipes drip water above ground to conserve water
  5. 7. removes salt from water
Down
  1. 1. petrol that has not been processed
  2. 2. desert
  3. 4. water from underground aquifers