Across
- 2. bird have ___________ as its outer body covering.
- 5. which animal group has dry skin with scales?
- 8. human beings belong to which animal group?
- 10. an example of a bird that cannot fly.
- 12. amphibians breathe through their moist ________ when underwater.
Down
- 1. the number of body parts that an insect have.
- 3. mammals have ________ as its outer body covering.
- 4. fish use their __________ to breathe underwater.
- 6. fish has ____________ as its outer body covering.
- 7. an example of an amphibian.
- 9. fish have ______ to help them swim.
- 11. all insects have how many legs?