October Crossword

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Across
  1. 4. Enzyme that breaks down proteins (8)
  2. 5. Young cow (4)
  3. 6. Stephen _____, Physicist and author of 'A Brief History of Time' (6)
  4. 7. Biological catalyst (6)
  5. 8. Largest planet in the solar system, named after the Roman god of the sky and thunder (8)
  6. 10. Leaf found on the Canadian flag (5)
  7. 12. Preserved remains of an organism from a long time ago, typically found in rocks (6)
  8. 13. Female counterpart to a peacock (6)
  9. 14. Small folds that line your small intestine (5)
  10. 15. Largest organ in the human body (4)
Down
  1. 1. Chart containing all known chemicals (8,5)
  2. 2. Hormone responsible for managing blood sugar levels (7)
  3. 3. Biggest artery in the human body, carries blood away from the heart (6)
  4. 9. National flower of Wales (8)
  5. 11. Heaviest land animal on Earth(8)