Across
- 2. effect significant impact
- 5. not quiet
- 7. pollution noise around us
- 8. researchers
- 10. cars buses on the road
- 11. hurt
- 13. o understand
- 15. able can
- 16. places where noise comes from
Down
- 1. hard
- 3. focus
- 4. stop
- 6. of hearing when a person cannot hear
- 9. feel pain
- 12. not safe
- 14. addition also