Across
- 4. technique for separating solutions that involves boiling and condensation
- 6. area of land that drains into one main lake or river
- 7. observe, check, or keep track of something for a specific purpose
- 11. average weather measured over a long period of time
- 12. characteristics used to describe a stream or river
- 14. in water, circular movement of water particles that causes a change in pattern that moves along the water's surface
- 15. eroded rock fragments and soil carried by watter or wind
- 17. water containing a high concentration of calcium and magnesium
- 18. the process of eroding or being eroded by wind, water, or other natural agents
- 19. description of the variety of different species in an ecosystem
- 20. amount of water dissolved
Down
- 1. group of organisms of the same species that live in a particular area
- 2. highest point of land on a continent
- 3. measure of the amount of substances besides water in a water sample
- 5. water that is safe for humans to drink
- 8. movement of water through a membrane from an area of lower water concentration to one higher water concentration
- 9. daily change in water level of the oceans
- 10. large moving body of ice
- 13. phsical characteristic or behaviour of a soecies that increasescthe soecies' chances of survival in a particular environment
- 16. steam of water that moves within a large body of water