Environment

3. The process by which water changes from liquid to gas (11 letters)
4. Waste material, especially unwanted or discarded items (7 letters)
6. The uppermost layer of soil, which is rich in nutrients (7 letters)
8. The practice of managing and planting forests (8 letters)
10. To bring into agreement, especially between industry and community (9 letters)
12. Type of land suitable for growing crops (6 letters)
13. Harmful or poisonous substances, especially gases (7 letters)
14. Reduction in the amount of something, such as resources (9 letters)
15. Substances released into the air, often from vehicles and industries (9 letters)

1. Trash that is often scattered in public places (6 letters)
2. The presence of harmful substances in the environment (13 letters)
5. Able to be maintained at a certain rate or level, especially regarding development (10 letters)
7. To burn waste materials completely, reducing them to ash (10 letters)
9. To maintain something in its original or existing state (8 letters)
11. The action of rotating crops to maintain soil fertility (8 letters)