Across
- 5. Chapter/history of this
- 6. boiled broth/sealed/no bacteria
- 7. Regular/ nonradioactive carbon
- 10. Swan neck
- 12. Life only comes from life
- 14. Half-life of carbon 14 (spell out numbers)
- 16. Like photosynthesis but no light needed
- 17. Developed carbon dating
- 19. Possibly the first photosynthesis
- 21. Type of dating using radioactive elements
- 22. Margulis theory
Down
- 1. Rate of decay
- 2. Studies ancient life
- 3. Chemical evolution
- 4. Made amino acids in their experiment
- 8. element with highest % in atmosphere/today and early earth
- 9. The first life was probably this
- 10. Movement of large areas of land on the earth
- 11. life from nonliving
- 13. Longest unit of geologic time
- 15. one of the building blocks of life
- 18. Radioactive carbon
- 20. Maggots/meat