Across
- 3. Special feature that protect and help them to hide from predator
- 6. networking tubes present in insects
- 7. Animals who gnaw their food
- 9. waxy coating on bees
- 11. Thin flat structure that have many blood vessels
- 16. polar bear are?
- 17. Animals that can fly
- 18. mammels Bats are_____
- 19. Earthworm breathes through it____
Down
- 1. Special substance in blood
- 2. Crocodiles and lizard have ____leg
- 4. Thin tube to suck nectar
- 5. microscopic living organisms
- 8. crocodile have ____ as outer covering
- 10. help penguin to swim
- 12. Porcupine has _____ as outer covering
- 13. Back limbs
- 14. 530 million years who came
- 15. Sharp curved claws