Across
- 2. they have mosit skin
- 3. they have 4 pairs of legs
- 7. sinonim of vertebrate
- 8. they have operculum
- 10. animals with a backbone
- 12. two organs that allow us to breath
- 14. they have a hard shell protecting a soft body
- 15. they produce their own food
- 19. it means "change"
- 20. they have wings and can fly
Down
- 1. animals without a backbone
- 4. it protects the body of the animal
- 5. they have limbs
- 6. they are sensitive to touch and vibration
- 9. help streamling for sweaming
- 11. they have long segmented body
- 13. they are parasites inside the gut of other animals
- 16. they have a carapace to ptotect themselves
- 17. they have fur
- 18. body covering keeping constant body temperature