Across
- 2. What makes an animal a "vertebrate"?
- 3. What kind of animal is endothermic?
- 6. What covers the skin of a reptile?
- 7. What is an insect's hard outer covering called?
- 10. What is the middle section of an insect's body?
- 11. What do all mammals breathe to stay alive?
- 12. What do fish use to breathe air?
Down
- 1. What do baby mammals drink from their mothers?
- 2. What do birds eat with?
- 4. What kind of change do amphibians go through to become an adult?
- 5. What covers the skin of a bird?
- 7. What kind of animals cannot regulate their own body temperature??
- 8. What do insects use to feel and touch things?
- 9. What covers the skin of a mammal?