Across
- 3. Lets us walk, run, lift heavy things
- 4. Animals that have a backbone
- 5. Creature that swims in water - like Nemo
- 8. On a bird's wings that help it fly
- 10. An animal with wings that can fly
- 11. Birds use this to eat
- 14. What a bird makes for it's babies with branches and twigs
- 16. An animal that does not lay eggs. Example: humans, dogs
- 17. Animals that do not have a backbone
- 19. That which makes something unique
- 20. If we don't breathe this gas, we will die
- 21. Lizards and snakes are types of this
Down
- 1. Keeping something safe
- 2. How we divide things into groups
- 6. Where a creature lives. Example: sea, forest, desert etc.
- 7. Creatures that can control their body temperature
- 9. We must protect the Earth's ......?
- 12. What something does
- 13. Humans cannot ..... under water
- 15. An animal that can live on both land and water
- 18. We say "For ...." to explain something