Across
- 2. ______-carrying tube transports substances from the roots
- 5. ______-carrying tube transport substances made by the leaves
- 7. the gas which our body needs
- 8. fish uses these to breathe
- 9. plants uses these for gaseous exchange
Down
- 1. gas that makes limewater turns cloudy
- 3. 78% of air is made up by this gas
- 4. the system that helps us to breathe
- 6. mammals use these to breathe