Across
- 3. Harmful substances that make the air, water, or soil dirty.
- 5. The layer of gases surrounding the earth.
- 8. Plants, trees, and grass in an area.
- 9. The process of soil and rock being worn away by wind or water.
- 10. The natural home of a plant or animal.
Down
- 1. A community of living and non-living things that interact in a place.
- 2. Protecting nature and using resources wisely.
- 4. A resource that can be used again and again.
- 6. The usual weather in a certain place.
- 7. A long period of time with little or no rain.