Across
- 3. double helix
- 4. tested
- 6. process of finding the answer
- 7. guess
- 8. atoms bonded
- 9. change over time
- 11. changed
- 13. source of energy
- 15. able to be changed
Down
- 1. observing
- 2. single celled
- 5. measured
- 10. stays the same
- 12. tested that is supported by evidence
- 14. measured