Across
- 3. The layer of gases surrounding the Earth.
- 6. The act of preserving and protecting the environment and natural resources.
- 9. The natural home or environment of an animal or plant.
- 10. The introduction of harmful substances into the environment
Down
- 1. A species at risk of extinction
- 2. The process by which green plants make their food using sunlight.
- 4. The clearing of trees, transforming a forest into cleared land.
- 5. Substances used to eliminate pests that harm crops and plants
- 7. The process of recycling organic waste into fertile soil.
- 8. Organisms that live in water.