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