Across
- 3. The more it is used, the more trees are felled
- 4. Where we live that must be preserved
- 7. Useful to humans but harmful for aquatic life
- 8. Inhaled to enable humans live
Down
- 1. A term used to describe damage to the environment and the earth
- 2. Transform from one form to another
- 5. The cheapest method of managing waste
- 6. Covers 71% of the earth