Across
- 4. the grey-black gases coming out of car's pipes (3 Words)
- 7. Materials used for making packages
- 9. the waste coming out of factories' activities
- 11. spray bottles made of tin, such as deodorant
- 13. covered by something in order to stop heat, electricity, or sound from going into or out of it
- 14. not dangerous for the nature
- 15. to give a very serious damage to the nature (3 Words)
- 16. two panes of glass in a window, fitted to reduce the transmission of heat, sound, etc
Down
- 1. water, natural gas, wind, etc.
- 2. things which are used by other people but in a good condition
- 3. natural, grown without additional chemicals
- 5. something ready and waiting for use
- 6. something dangerous
- 8. to save, or maintain
- 10. the gases coming out of industries (2 words)
- 12. passed through a system again for further treatment or use