Across
- 4. Some reptiles have this type of heart
- 6. When a bird takes off
- 7. Their diet shapes their ____
- 8. Birds are ____
Down
- 1. provides nourishment to the embryo and contains membranes to protect it
- 2. Reptiles have this type of skin
- 3. This is located on a bird and they fall off as well
- 5. Reptiles are ____