Across
- 4. To make less waste
- 5. to use something again.
- 6. Energy from the sun
- 7. Harmful substances in the air or water
- 8. everything that makes up the surroundings of a living thing.
Down
- 1. planting trees.
- 2. the act of cutting down or burning trees in an area.
- 3. Converting waste materials into reusable objects