Answers for following questions: 1. Water intended for human consumption is refe

Question

Answers for following questions:

1. Water intended for human consumption is referred to as …….

2. Unpolluted freshwater supplies are known as ……..

3. Water supplies are distributed _______around the world.

4. By the year 2025, it is projected that _____ percent of the world's population will live in water-stressed river basins.

5. The fastest growing drink of choice in many parts of the world is …..
6. The amount of oxygen required to decompose organic matter is called ________________
7. Which nutrient(s) stimulates algae and aquatic plant growth?

8. Eutrophication occurs when ……
9. The process by which the earth's water cleanses itself through solar evaporation, precipitation, and infiltration is called __________________.

10. A trickling filter system is generally used during which stage of sewage treatment?
11. Which of the following is NOT a problem associated with groundwater mining?

12. Which of the following accounts for nearly two-thirds of all human-caused marine oil pollution?
13. Which of the following is a source of groundwater contamination?

14. Worldwide, what two agricultural practices result in contamination of water?
15. In the United States, Las Vegas, Nevada is one of the fastest growing population centers and this has resulted in ………….
16. Most large urban areas depend on which of the following for their water supply?
17. The upper surface of shallow groundwater is called a(n) ____________.
18. The porous layer where water accumulates in the ground is called a(n) ___________.
19. The major consumptive use of water in most parts of the world is for _____________.
20. Which of the following involves the removal of phosphorous and nitrogen from sewage?

21. Which of the following removes larger particles from sewage by screening or settling?

22. In North America and Europe, the top use of water is for _______________.

23. What two activities use the most water for a typical North American family of four?
24. Which of these is an issue that commonly results in an international water dispute?

25. What percent of sewage is treated in North America?
26. The vegetable basket of the United States in central California has what water problem?

27. What two land uses result in substantial wetland loss in the United States?
28. Saltwater intrusion occurs when …………….
29. Worldwide, there is a relationship between the price of water and the amount consumed as the price ………

30. The energy needed to drive the hydrologic cycle is provided by the sun. – True/False

Explanation / Answer

answers :

1- drinking water

2 - potable water

3 - unequally

4 - 48

5 -  water

6 - BOD biological oxygen demand

7 - nitrates and phosphates

8 - when excess of nutrients reaches the water body

9 - hydrological cycle

10 - secondary

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