Across
- 4. eye - ophthalmologist
- 5. quick - tachometer
- 6. deep - batholith
- 7. hair - cirrus
- 9. enough - satisfy
- 11. tumor - glaucoma
- 12. come - convene
- 15. center - nucleus
- 16. loosen - resolve
- 18. thousand - kilometer
- 20. heavy -gravity
- 21. red - rubric
- 23. split - fissile
Down
- 1. fish - ichthyosaur
- 2. mountain - Montana
- 3. early - preterandrous
- 7. heaped - accumulate
- 8. heat - calorie
- 10. high - meteorite
- 13. drive - impluse
- 14. sun - solar
- 17. winter - hibernate
- 19. many - myriad
- 22. two - diverge
- 24. layer - strata