Across
- 4. Operates by forving salt out og water by pushing it against holes too small for the salt to pass through
- 6. Water that is safe for humans to drink.
- 7. To observe.
- 10. Average water measured over a long period of time.
- 11. Stream of water that moves within a larger body of water.
- 12. Circular movement of water particles that cause a change in pattern.
- 13. Eroded rock fragments and soil carried by water or wind.
- 15. Highest point of land on a continent.
- 16. how pure the water is.
- 18. Amount of dissolved salts in water.
- 20. Increases a species chance for survival.
Down
- 1. A group of organism of the same species that live together.
- 2. Contains a high concentration of the minerals calcium and magnesium.
- 3. Description of the variety of different species in an ecosystem.
- 5. Rate of water flow and the slope of the streams bed
- 8. Technique for seperating solutions that involves boiling and condensation.
- 9. The direction the water is moving.
- 14. Area of land that drains into one main lake or river
- 17. Large moving body of ice
- 19. Daily change in water level of the ocean