Across
- 3. fresh meets salty
- 5. rivers keep coming
- 7. high levels of salt
- 8. deep, deep in darkness
- 9. high tides and low tides
- 10. one direction
- 12. vary in size
- 14. soil as a filter
Down
- 1. shines bright for photosynthesis
- 2. only 3% of water in the world
- 4. shallow with sunlight
- 6. water ecosystem
- 11. living interacting with environment
- 13. surface of the sea floor