Across
- 1. harmful materials in the environment
- 6. a resource that can be easily reproduced or made again
- 7. too much rain over a short period of time
- 8. wearing away of rocks by wind or water
- 9. substances found in soil that help organisms grow
- 10. to save Earth's resources
Down
- 2. a resource that takes thousands of years to reproduce
- 3. multiple people riding in a car together to conserve fossil fuels
- 4. can be caused by lighting or people
- 5. when humans cut down trees