Across
- 3. liquids or gas
- 4. transparent
- 9. nutrients
- 10. odorless
- 11. permeation
- 13. filtering of fluids
- 14. hot or cold
Down
- 1. chemical element
- 2. long exposure
- 5. waste
- 6. maintain water for life
- 7. organisms
- 8. layer of earth
- 12. soil horizons form