Across
- 2. Painter who created the 'Mona Lisa' painting
- 5. The number of chambers the heart has
- 6. The largest species of shark
- 9. The artist that cut his ear off
- 11. The author of the play Orthello
- 12. The only metal that is liquid at room temperature
- 13. The element with the chemical symbol 'Fe'
Down
- 1. The acronym for this is WWW
- 3. The process by which plants transform carbon dioxide into oxygen
- 4. The longest river in the world
- 7. The most spoken language in the world
- 8. The empire that was ruled by Julius Caesar
- 10. The currency in Japan
- 12. Planet that is closest to the sun