Across
- 7. discovered by Alexander Fleming
- 11. William Cullen
- 12. Thomas Edison
- 14. patented by Nikolaus Otto
- 15. tamed by hominis in kenya
- 16. invented 3.500 before christ
Down
- 1. Johanes Gutenberg
- 2. Roger Bacon
- 3. Chinese
- 4. invented by Alexander Graham Bell
- 5. by the Romans
- 6. Gaston Plante
- 8. Francisco Fermi
- 9. Romans 2.000 ago
- 10. invented by Santos Dumont
- 13. Tim Berners Lee