Across
- 4. The act of returning something to its former condition.
- 7. The process of making an area more urban or city-like.
- 8. Capable of being maintained without harming the environment.
- 9. The act of becoming involved in a situation to change its outcome.
- 11. The natural environment where a plant or animal lives.
- 13. A community of living organisms and their environment interacting as a system.
- 14. The act of taking out or removing something, often from the ground.
- 16. The process of planting trees in an area that has not been forested for a long time.
- 17. The protection and preservation of natural resources.
- 18. The ability to be maintained at a certain rate or level.
- 19. The variety of different types of life found in an area.
- 20. Native to a particular area or environment.
Down
- 1. Causing disagreement or discussion.
- 2. The process of deteriorating or being damaged.
- 3. To make something less severe or serious.
- 5. The process of planting trees in an area where forests have been cut down.
- 6. The presence of harmful substances in the environment.
- 10. The act of cutting down trees in a forest.
- 12. The excessive use of resources leading to depletion.
- 15. At risk of extinction or becoming extinct.