Across
- 6. the study of life's history from preserved remains
- 8. the process by which rock and soil are broken down
- 10. make up rocks
- 13. the total record of all the fossils found
- 14. the conversion of organic material into rock
- 15. molten rock
- 17. made up of minerals
- 18. what uniformitarians need a lot of
- 19. the preserved remains of a once living organism
- 20. the decayed remains of once living creatures
Down
- 1. what something does when it dies
- 2. earth was formed by large scale catastrophies
- 3. earth was formed over billions of years
- 4. organisms found in lowest layers of fossil record
- 5. layers in the Grand Canyon
- 7. a surface of erosion that separates layers of rock
- 9. small pieces of sand, silt, minerals and dirt
- 11. a term for species that are no longer living
- 12. the study of earth's history from rocks
- 16. a thick slowly flowing liquid produced by plants