Exam crossword puzzle

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Across
  1. 2. sand desert encompassing most of the southern third of the Arabian Peninsula.
  2. 3. -a viscous liquid derived from petroleum, especially for use as a fuel or lubricant.
  3. 4. - a town or city with a harbor where ships load or unload, especially one where customs officers are stationed.
  4. 11. - a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land
  5. 12. a human-made waterway that cuts north-south across the Isthmus of Suez in Egypt
  6. 14. the supply of water to land or crops to help growth, typically by means of channels.
  7. 15. -the belief in or worship of more than one god.
Down
  1. 1. - a strait between the Persian Gulf and the Gulf of Oman.
  2. 5. a long narrow sea between Arabia and NE Africa, linked with the Mediterranean in the north by the Suez Canal and with the Indian Ocean in the south
  3. 6. -largest branch of Islam, followed by 85–90% of the world's Muslims.
  4. 7. -a city in Saudi Arabia that was the birthplace of Muhammad and is the holiest city of Islam
  5. 8. -one of the two main branches of Islam, followed especially in Iran, that rejects the first three Sunni caliphs and regards Ali, the fourth caliph, as Muhammad's first true successor.
  6. 9. there are many people living there compared with another similar-sized area.
  7. 10. -the law of God as revealed to Moses and recorded in the first five books of the Hebrew scriptures
  8. 13. the easternmost of the two great rivers that define Mesopotamia, the other being the Euphrates.