Across
- 3. a place to dispose of refuse and other waste material by burying it and covering it over with soil
- 5. the envelope of gases surrounding the Earth or another planet
- 7. the sun's rays as a source of energy from which power for domestic or industrial use may be generated
- 9. protect (something, especially an environmentally or culturally important place or thing) from harm or destruction
Down
- 1. the surroundings or conditions in which a person, animal, or plant lives or operates
- 2. trash, such as paper, cans, and bottles, that is left lying in an open or public place
- 4. relating to or derived from living matter
- 6. contaminate (water, air, or a place) with harmful or poisonous substances
- 8. convert (waste) into reusable material
- 10. a source of energy that is not depleted by use, such as water, wind, or solar power