Across
- 1. birds regulate body temperature
- 4. food goes from the stomach/gizzard to the
- 6. a bird's circulatory system has complete
- 9. medulla regulates
- 10. what is the animal on the first page
- 14. food goes from the small intestine to the
- 15. how many dinosaurs are on page 7
- 17. it rely on behavior to help control body temp
Down
- 2. birds are believed to have evolved from
- 3. the discovery of the evolution of birds is
- 5. dry scaly skin does not
- 7. What group became dominate about 215 mill years ago
- 8. scales can be rough or
- 11. in feeding birds need a lot of
- 12. reptiles live on
- 13. and flight feathers are used for
- 16. snakes are what