Across
- 3. help birds fly
- 5. they live both on land and in water
- 6. helps fish swim
- 7. soft things that cover a bird's body
- 8. small animal with a long,narrow,soft body
Down
- 1. they give birth,produce milk
- 2. helps fish breathe
- 4. skin of snake/fish
- 6. soft hair of animals,it keeps them warm