Across
- 1. to keep safe
- 2. not cold
- 6. not clean
- 8. to use again
- 9. not healthy
- 11. dirty water or air
- 12. living creatures
- 13. not safe
Down
- 1. a material used to make bottles and things
- 3. catching too many fish
- 4. waste or garbage
- 5. reef a home for sea animals and plants
- 6. to stop living
- 7. a very big salt water
- 10. the weather of a place