Across
- 3. Earth's gases
- 6. Contaminated by agricultural pollutants
- 8. Life on Earth
- 9. Earth's rocks
- 10. First step of the scientific process
- 11. Rising due to melting ice caps
- 12. Used to represent data
- 13. Careful protection of something
Down
- 1. Scientific guess
- 2. Untampered
- 4. Earth's water
- 5. Left when something is done to harm the environment
- 7. Harmful to marine life