Across
- 3. the first species to colonize after a disturbance
- 9. organisms best suited to their environment to reproduce
- 11. demonstrates that an interaction between two organisms causes one organism to change in response to changes in other organisms.
- 12. a branch of ecology that focuses on the origins of wild land fire
- 13. molars left over from we are mostly tough plants
- 15. the first geologic eras of the Phanerozoic era
- 16. starting that all species of organisms arise and develop through natural selection.
- 17. are homologous but have lost their function over time.
- 19. the evolution of two or more species each adapting to changes in the other
- 20. the second geologic era of the Phanerozoic era
Down
- 1. any living thing
- 2. when a group from a specific population develops into a new species.
- 4. structures in different species that are similar because of common ancestry
- 5. Amy preserved remains, impression or trace is something once living
- 6. the process of which different kinds of living organisms are thought to have developed from earlier forms during history of earth
- 7. animals are replaced.
- 8. laws of nature have not changed over time.
- 10. plants are replaced
- 14. the final stage of succession
- 18. the last geologic era of the Phanerozoic era