Across
- 2. – An overflow of water onto normally dry land.
- 3. – The natural home of a plant or animal.
- 4. – A community of living things and their environment.
- 6. – Harmful substances that make the environment dirty.
- 7. – To process used materials so they can be used again.
- 9. – A large area covered mainly with trees.
- 10. – A low area of land between hills or mountains.
Down
- 1. – An opening in Earth's surface where lava, ash, and gases may come out.
- 5. – A sudden shaking of the ground.
- 8. – To protect and avoid wasting natural resources.