Geography puzzle

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Across
  1. 3. a tectonic plate in the Middle East starts with the letter A
  2. 5. the country in the middle east with the biggest oil reserves
  3. 8. A geographic area ruled by a foreign power
Down
  1. 1. an event of abnormally dry weather
  2. 2. the removal of salt from water
  3. 4. country in the Middle East with the lowest oil reserves
  4. 6. the improvement of the quality of life in a country
  5. 7. a piece of land