unit E

6. are under water volcanoes that do not come all the way to the oceans surface
7. group of organism of the same species that live particular area
8. are large bodies of water of ice
12. are streams of water that move within a larger body of water
14. daily change in water level of oceans
15. water containing a high concentration of calcium and magnesium
17. means to observe,check or keep track of something
18. sediments eroded rock fragments and soil carried by water or wind
19. technique for separating solutions that involves boiling and condensation
20. is the average weather measured over a long period of time

1. are small hills with a distinctive teardrop shape
2. highest point of land on a continent
3. richest ecosystem
4. measure of the amount of substances besides water
5. amount of dissolved salts in water
9. form from rocks and gravel up the sides and at the ends of glacier
10. water that is safe for humans
11. a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms
13. a low oval mound or small hill,typically one of a group
16. variety of different species in an ecosystem