Across
- 4. Damage caused to water, air, etc. by harmful substances or waste
- 7. A luxuriant, dense forest rich in biodiversity
Down
- 1. The process of making an area more urban
- 2. The trapping of the sun's warmth in a planet's lower atmosphere
- 3. A biological community of interacting organisms and their physical environment
- 5. a sudden violent shaking of the ground
- 6. Convert into reusable material