Across
- 2. harmful materials in the air, water, earth
- 4. material that is used to make bags, bottles, toys etc.
- 5. air we need to breathe
- 6. dioxide, trees absorb this gas
- 9. cutting down forests
- 12. using natural resources so we can continue to use them in future
- 13. materials that can be gas, liquid or solid, can be safe or harmful
- 14. able to be thrown away after using a short time
Down
- 1. a person who wants to protect the environment
- 3. protecting nature
- 7. to fall apart into small pieces
- 8. warming, the gradual increase of earth's temperature
- 10. collect garbage and make into new things to use again
- 11. weather in a certain place over a long period of time