Science

2. the movement of water from the surface to greater depths carrying oxygen down allowing animals to thrive
5. the vertical movement of deep water up to the surface bringing up nutrients from the deep ocean allowing animals to thrive
7. an increase in nutrients in a lake or pond, occurring naturally or as a result of pollution, which causes increased growth of algae
8. an underground layer of permeable rock that contains water
9. a shoreline area where fresh water from a river mixes with salt water from the ocean
10. an openin in the sea floor from which heated water rises and mixes with the ocean water above
14. does not allow substances to pass through
16. a form of nutrient pollution
19. the flat or gently sloping land that lies submerged around the edges of a continental and extends from the shoreline out to the continental slope
20. allows substances to easily pass through
21. the amount of salt in a substance
22. area of land that water drains into when the ground is saturated or impermeable
24. pollution with a widely spread source that can’t be tied to a specific point of origin

1. passed in the u.s in 1972 this law focused regulation on industrial waste and water contamination as well as waste water treatment
3. a ridge or continuous line of high land from which water flows in different directions
4. a measure of the clarity of water that depends on the amount,size and composition of suspended matter
6. pollution that enters water from a specific source that can be identified
11. the process of removing salt from ocean water
12. a well in which water flows upward to the surface naturally because it is under pressure
13. the yearly rising and sinking of cold and warm layers in a lake
15. the ratio of the mass of a substance to the volume of the substance
17. the entire geographical area drained by a river and its tributaries
18. the highest part in the ground that is saturated, or completely filled with water
23. a system that uses underwater sound waves to measure distance and locate objects