Across
- 3. to use more than necessary, or to use inefficiently
- 4. the complex system of relationships between living things and their environment
- 6. to put organic waste like vegetable peels, uneaten food, grass clippings and leaves into a large container that breaks it down into healthy soil
- 8. animals, birds, insects, etc. living naturally in the wild
- 9. can be used without running out, esp. of energy sources like solar and wind
- 10. to keep something in its original state
- 11. to travel from home to work and back
- 12. to use again
- 13. to release waste substances into the air, water and soil
- 14. dioxide a gas that's released when carbon is burned (for example coal or oil), or when people or animals breathe out
Down
- 1. fuel a fuel like oil or coal formed from very old plant and animal fossils
- 2. to make something new from materials that have been used before
- 4. no longer existing or lost forever (of an animal bird or plant species)
- 5. to give money or goods to an organization you want to help or support
- 7. the planting of trees and plants to help a damaged or destroyed forest recover