Across
- 2. surface of sea floor
- 9. only 3% of water
- 11. high tide and low tide
- 12. title of notes
- 13. shallow plus sunlight
Down
- 1. living interacting with environment
- 3. fresh meets salty
- 4. vary in size
- 5. deep, deep, down
- 6. high levels of salt
- 7. shines bright for photosynthesis
- 8. soil as a filter
- 10. flows in one direction