Across
- 2. a process of wearing parts of the geosphere off
- 4. average weather in a long period of time-
- 6. the cloudiness of water caused by a large amount of individual particles
- 7. area of land that drains water usually for floods
- 10. measurement of water acidity
- 11. when water is boiled with salt and evaporates or separating solutions
- 13. variety of organisms in an ecosystem
- 15. characteristics used to describe a river or a stream
- 16. high concentration of the minerals calcium and magnesium
- 17. how pure water is
- 20. total amount of salt dissolved in water
- 21. a group of the same type of organism in a certain area
Down
- 1. obervation or keeping track for a specific purpose
- 3. are minerals or matter that settles below water-
- 4. highest point of land on a continent
- 5. a process of breaking down large rocks into smaller ones
- 8. a large piece of ice that moves on water
- 9. a change of pattern along water surface
- 10. safe drinking water
- 12. when water goes in a membrane from a low concentrated water to high concentration
- 14. a daily change of water levels
- 18. a physical behavior or characteristics of a species
- 19. when water drains or flows away