Across
- 3. animal with stinging cells- jellyfish
- 6. organs that help fish breathe
- 10. have tiny ring-like skin, earthworms
- 12. animal with a backbone
- 13. thick, hard other covering
- 14. animals that can generate heat from inside their body
- 15. have no true tissues-sponge
- 16. have a shell & mantle-clam
Down
- 1. replaced with ur backbone
- 2. mammal with a pouch-kangaroo
- 4. have a cuticle for protection, roundworm
- 5. not symmetrical, can't mirror
- 7. animal with spiny skin- sea cucumber
- 8. internal framework that supports you
- 9. animal with no backbone
- 11. have jointed appendages-a butterfly