Across
- 4. electronic
- 6. ancestor
- 9. arrive
- 11. rough
- 14. carriage
- 15. distant
- 18. canteen
- 19. linguistics
- 20. permanent
- 21. crash
- 22. invent
- 24. biology
Down
- 1. observe
- 2. reply
- 3. jigsaw
- 5. conservation
- 7. route
- 8. physicist
- 10. vision
- 12. screen
- 13. chemistry
- 16. astronomy
- 17. digital
- 18. coast
- 23. solve