Across
- 2. the youngest layer is on top and the oldest layers on the bottom
- 7. the movement of magma going onto a surface
- 8. the change in heritable characteristics of biological populations
- 9. the actual age of something
- 11. Rock that is formed by the accumulation of small particles
- 13. the process where organisms change over time
- 16. System of chronological dating that relates to geological stanza
- 19. the earths outer shell is divided into several plates
- 20. the difference in DNA in individuals
- 21. forcing igneous rock between existing formations
Down
- 1. when is soil and rock particles are worn away
- 3. a fossil that is used for dating the strata
- 4. one rock or a fossil compared to another to determine which one is younger or older
- 5. one of several subdivisions geological time
- 6. organisms who better adopt tend to survive
- 10. scientist who studies fossils
- 12. the remains of a prehistoric organism
- 14. Rock that is formed by the cooling of magma
- 15. the change in the earths surface
- 17. a long period of time in history
- 18. the breaking down of rocks on earth surface