Puzzle 21

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Across
  1. 3. Fine grains found on beaches and deserts
  2. 6. A covert agent skilled in martial arts and stealth
  3. 7. A common Spanish surname or a tower-like structure
  4. 8. A small partitioned work area
  5. 10. A sentence designed to elicit information
  6. 12. A color associated with nature and growth
  7. 13. A mechanical system that changes engine speed
  8. 15. A small unit of life or a prison room
  9. 16. An unexpected event or reaction
  10. 18. A city in Brazil near the Amazon rainforest
  11. 19. A country in the Middle East
Down
  1. 1. A sea creature with eight arms and a soft body
  2. 2. A sport involving grappling and throws
  3. 4. The capital city of Afghanistan
  4. 5. A tall plant with a trunk and branches
  5. 9. The frame of a vehicle or machine
  6. 11. A thin, flat piece cut from something
  7. 14. A white liquid produced by mammals
  8. 17. A country in southern Africa
  9. 18. A biblical figure who led the Israelites from Egypt