Across
- 2. sources that will end or will not be replenished in our lifetimes
- 3. collect and change old paper, glass, plastic, etc. so that it can be used again
- 4. the air, water, and land in or on which people, animals, and plants live
- 5. protect from harm
- 8. unwanted or unusable materials
Down
- 1. damage caused to water, air, etc. by harmful substances or waste energy
- 6. .... panel designed to get the sun's rays and turn that into electricity
- 7. the purposeful clearing of forested land