Across
- 2. Foxes, wolves, and coyotes are very similar in structure, but fill different roles in the environment. n They are similar because they share a ______________ ancestor.
- 5. ____________ :A species that once lived on earth, but we can no longer find any living specimen
- 6. ________________: change over time.
- 7. Survival of the ______________: those organism better suited to their environment are more likely to survive and reproduce.
- 9. _________________:creation of a new species.
- 10. Any change in DNA is considered a ______________.
Down
- 1. ___________________ structures: similar structures in different organisms that have adapted to different environments.
- 3. Any group of organisms that can produce fertile offspring together are part of the same __________________.
- 4. _________________: change in an organism to help it be better fit to its environment.
- 8. _________________ structures: structures within an organism that no longer have a purpose.