Across
- 1. – To release or give off something, especially gas or radiation.
- 4. – To interrupt the normal function or process of something.
- 8. – A material that can be broken down naturally by microorganisms.
- 9. – Rain that contains harmful chemicals from air pollution.
- 13. – A person who studies or practices science.
- 15. – A greenhouse gas that is produced by landfills and livestock.
Down
- 2. – To destroy waste material by burning.
- 3. – How to call a city landscape
- 5. – The trapping of the sun’s warmth in the Earth’s atmosphere.
- 6. – A substance that makes air, water, or soil harmful or dirty.
- 7. – A group of people living in the same place or having a common interest.
- 10. – The condition of being unable to hear.
- 11. – The basic substance from which products are made.
- 12. – To protect something from danger, risk, or unpleasant experience.
- 14. – To process used materials so they can be used again.