Across
- 4. a large mass of ice
- 7. synonym of " to preserve"
- 9. giving water to the land so that crops will grow.
- 12. rise in the temperature of the Earth's climate
- 13. to pollute
- 14. adjective of "to poison"
- 17. illness, sickness, and _______
Down
- 1. when paper , glass , plastic …etc is collected to be used again.
- 2. opposite of increase
- 3. a long period when there is no rain
- 5. Co2
- 6. contamination of water
- 8. an amount of gas that is sent out
- 10. cutting down of trees
- 11. the presence of toxic emissions in the air
- 13. a total amount of collected fruit and vegetables
- 15. when oil spills into the sea
- 16. dirty liquid or waste water