Across
- 5. dark on top light on bottom
- 6. meat and plant eating
- 9. allows fish to float
- 12. jawless fish
- 13. warm blooded
- 14. flap that covers the gills
Down
- 1. live young
- 2. a flexible rod that supports a chordates back
- 3. sensitive receptor system
- 4. bony fish
- 7. eggs hatch outside the mothers body
- 8. meat eating
- 10. cold blooded
- 11. plant eating