Across
- 4. Building block of nucleic acids
- 7. preserved to become a fossil
- 9. Basic unit of matter
- 11. Measuring the depth of water
- 12. Part of cell with a specific job
- 13. A gas, the first element
- 14. Underwater mountain greater than several hundred meters
- 15. Going in different directions
Down
- 1. Mixture without uniform composition
- 2. Atoms bonded together
- 3. A proposed explanation
- 5. When water fills in all open spaces of a dead organism
- 6. Mixture with uniform composition
- 8. Building up molecules
- 10. Average weather over a long period of time