Across
- 2. the trace or remains of a organism that lives long ago most commonly preserved in a sedimentary rock
- 4. a genetically determined characteristics
- 6. became crocodiles
- 8. developed from a monkey into a human
- 9. a group of organisms that are closely related and can mate to produce fertile offspring
- 11. the process in which inherited characteristics within a population change over generations such as that new species sometimes arise
- 13. had eyes
- 14. developed into having no legs
- 17. have been around longer than the dinosaurs
- 20. got striped fur so mosquitoes wouldn't see them and kill them
Down
- 1. produce more seeds than the average plant
- 3. selection the process by which individual that are better adapted to their environment survive and reproduce more successfully then a less well adapted individual still; A theory to explain the mechanism of an environment
- 5. developed from a genus Hyracotherium
- 7. a characteristic that improves an individual's ability to survive and reproduce in a particular environment
- 10. records record a historical sequence of life indicated by fossils found in layers in the earths crust
- 12. eveloed from being bigger
- 15. got extra sticky feet to climb trees
- 16. most evolved animal
- 18. breeding did the human practice of braiding animals or plants that have certain desired traits
- 19. got more gills
