happy birthday

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Across
  1. 3. a stream that unites with another
  2. 4. a dark reddish brown non metallic liquid element with a suffocating odour
  3. 7. a book series that includes the book prisoner of azkaban
  4. 8. a type of spectacle
  5. 10. the element that strengthens your teeth
  6. 11. the strongest fibre
  7. 13. the northmost country
  8. 14. harmful
  9. 17. living organisms that are invisible to the naked eye
Down
  1. 1. deadly creature
  2. 2. flying AI that can take pictures and send information to a driver
  3. 3. the closest dwarf planet to the sun
  4. 4. fragile
  5. 5. a type of lightning
  6. 6. a course heavy shoe
  7. 8. an element that has a chemical symbol of AU
  8. 9. an 1980s dance move
  9. 12. saturated salt water
  10. 15. the last greek letter
  11. 16. the largest organ in the human body