Across
- 5. Also called a missing link
- 7. The theory that traits that allow individuals to survive and reproduce better than other individuals without those traits will become more common in the population
- 9. fossilized footprints, imprints, and bite marks
- 11. The concept that all of Earth's physical processes happen at the same rate in the present time as they did in the past.
- 12. empty space is the mold, the sediment that fills the empty space is the cast.
- 15. A structure that according to evolutionary theory no longer has a function
- 17. The modern model of evolution that blends mutation and natural selection
- 18. petrified wood
- 19. the idea that Earth has been changed by sudden, short lived, violent events.
Down
- 1. Features that are shared by distinct types of organisms
- 2. A species of organism whose descendants are believed to form two distinct species
- 3. theory that states that simpler organisms have slowly changed into new and more complex organisms over millions of years
- 4. The process used to estimate the age of rocks and other materials
- 6. Random changes in DNA
- 8. The preserved remains of plants and animals
- 10. A distinct group of organisms that God created to reproduce
- 13. A thin layer of carbon is left, like a printed image.
- 14. Amber sap traps an organism and the sap gets buried in the sediment and hardens into amber.
- 16. The accumulated random mutations within the DNA of a population of organisms