Across
- 1. treating the water
- 6. the water underground
- 7. when water sticks to water
- 10. microscopic marine algae
- 13. when fish in the area die because of the oxygen levels
- 15. the 3rd layer of the ocean
- 18. where deep cold water rises to the surface
- 21. the curve of a river
- 22. water running down a hill
- 24. when water goes up the stem of a plant
- 25. all water on earth
Down
- 2. where freshwater from rivers and streams mixes with salt water from the ocean
- 3. when you can't trace back to the pollution
- 4. how much salt is in the water
- 5. see if a object floats or sinks
- 8. water striders
- 9. you can trace back to the pollution
- 11. when water sticks to different object
- 12. testing the acidity or how base a liquid is
- 14. the quality of the water
- 16. filtering the water
- 17. the cloudiness in the water
- 19. where land is covered by water
- 20. the 1st layer of the ocean
- 23. where sea animals live