Across
- 4. All the different kinds of life you'll find in one area.
- 6. Living organism that feeds on organic matter.
- 8. Large-scale removal of trees from forests.
Down
- 1. Introduction of harmful materials into the environment.
- 2. Biological community of interacting organisms and their physical environment.
- 3. Regain material for human use.
- 5. The planet on which we live.
- 7. Large area covered with trees and undergrowth.