Science

1234567891011121314151617181920
Across
  1. 3. A league is equivalent to how many nautical miles at sea (5)
  2. 4. Gland in the human body that regulates metabolism (7)
  3. 6. First successful vaccine developed by Edward Jenner in 1796 (8)
  4. 8. World's fastest growing plant species (6)
  5. 11. Chemical element with the symbol Au (5)
  6. 12. Name for a protein that acts as a biological catalyst (7)
  7. 14. Schrodinger's cat is a thought experiment dealing with which type of mechanics (7)
  8. 15. Coulrophobia is the fear of what (6)
  9. 17. Acronym for The European Organization for Nuclear Research (4)
  10. 19. Igneous rock with less density than water(6)
  11. 20. Name of first mammal cloned from an adult cell (5)
Down
  1. 1. Element with atomic weight of 1.00794 on periodic table (8)
  2. 2. Pigment that gives colour to skin (7)
  3. 4. Element that makes the filament in an incandescent light bulb (8)
  4. 5. Stratus and cumulus are types of these (6)
  5. 7. Gives red blood cells their colour (10)
  6. 9. Penicillin is used to fight what type of infections (9)
  7. 10. Inorganic material produced by lightning (5)
  8. 13. Greek mathematician considered the found of Geometry (6)
  9. 16. Inferior and fata morgana are types of what optical illusion (6)
  10. 18. Heavy metal element once known as quicksilver (7)