Across
- 4. daily changes in water level of the oceans
- 5. water that is safe for humans to drink
- 7. description of the variety of different species in an ecosystem; may also be used to describe variety in a population or species
- 9. water containing large concentration of calcium and magnesium
- 10. in water, circular movement of water particles that causes a change in pattern that moves along the water’s surface; the pattern can move over long distances but the water particles do not
- 11. Stream of water that moves within a larger body of water
- 12. eroded rock fragments and soil carried by water or wind
- 14. highest point of land on a continent; rivers flow into different oceans depending on which side of the divide they start
- 15. movement of water through a membrane to an area of low water concentration to higher water concentration; technique used for purifying water
- 18. technique for separation solutions that involves boiling and concentration
- 19. Group of organisms of the same species that live in a particular area
Down
- 1. average weather measured over a long period of time
- 2. characteristics used to describe a stream or river; these include volume and rate of flow, slope and shape of bed
- 3. Physical characteristic or behavior of a species that increases the species' chances of survival in a partic
- 6. area of land that drains into one main lake or river
- 8. Large moving body on ice; Glaciers can be many meters of even kilometers thick
- 13. measurement of the amount of substances besides water in a water sample; description of how pure the water is
- 16. the amount of dissolved salts in water
- 17. Observe, check, or keep track of something for a specific purpose