Across
- 2. Who discovered the ozone hoke
- 4. one of the three rs
- 7. most used material in the world
- 9. who invented fractional distillation
- 10. slabs of iron
- 11. unsustainable resources
Down
- 1. Who discovered climate change
- 2. can be re used
- 3. one of the three rs
- 5. what cou try polluted the most
- 6. one of the three rs
- 8. what is the most reactive metal