Unfinished Test and Answers for Ch12Quiz

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1.

Desalinization to produce fresh water is only in limited use worldwide because ( Solutions to Depletion of Fresh Water )

2.

Populations in ocean fisheries have been dropping for decades, but the amount of fish caught has not shown this drop. What factor is NOT responsible for hiding this drop in fish populations? ( Overfishing and Marine Conservation )

3.

Salt can be removed from seawater by ( Solutions to Depletion of Fresh Water )

4.

Use of the water from the Colorado River has ( How We Use Water )

5.

What caused the Aral Sea, the fourth-largest lake on Earth, to lose four-fifths of its volume in 40 years? ( How We Use Water )

6.

The largest reduction in worldwide water use would be achieved by

7.

Although more than two-thirds of Earth's surface is covered by water, many areas lack sufficient water to meet their drinking and agricultural needs. Why? ( Freshwater Systems )

8.

The most cost-effective solution for groundwater depletion and land-level subsidence is ( How We Use Water )

9.

Ocean areas of high productivity are often found ( Marine and Coastal Systems )

10.

Which of the following is NOT a benefit of marine reserves? ( Overfishing and Marine Conservation )

11.

An example of a non-point source of water pollution is ( Water Pollution and Its Control )

12.

The world's ocean fisheries ( Overfishing and Marine Conservation

13.

Ecosystem services provided by mangrove forests include all of these EXCEPT ( Marine and Coastal Systems )

14.

Overpumping of groundwater causes all the following EXCEPT ( How We Use Water )

15.

A marine protected area is ( Overfishing and Marine Conservation )

16.

Groundwater is more easily depleted than surface waters because

17.

The largest single source of oil that accumulates in the ocean is ( Human Use and Impact )

18.

Which of the following is NOT a benefit of building the Three Gorges Dam on China's Yangtze River? ( How We Use Water )

19.

The best term for managing fish populations by maintaining them at a maximum growth rate and achieving maximum yield while keeping fish available for the future is ( Overfishing and Marine Conservation )

20.

An aquifer is

A.

commercial fishing decreasing in areas adjacent to the marine reserve

B.

in areas of upwellings.

C.

maximum sustainable yield.

D.

an underground water source stored in porous rock or sand.

E.

switching to drip or low-pressure spray crop irrigation.

F.

allowing no more water to be withdrawn from an aquifer than is naturally recharged.

G.

groundwater recharge is much slower than recharge of surface water.

H.

providing habitat for human-made shrimp farms.

I.

cumulative small losses from boats and runoff from land.

J.

resulted in the river not reaching the Gulf of California at certain times of the year.

K.

mimicking the hydrologic cycle by capturing ocean water, hastening its evaporation with heat, and condensing the vapor.

L.

decreased aquifer recharge.

M.

overconsumption by cotton farmers

N.

Moratoriums on fishing in certain areas (like the Georges Bank and the Grand Banks) have allowed fish stocks to recover and have helped to reseed other fishing areas.

O.

it requires large inputs of energy.

P.

discharging more water loaded with silt into the ocean, helping to build the delta

Q.

have been so overfished that fishing in some fisheries has been completely banned.

R.

About 97% of the water on the planet is in the oceans and too salty for drinking or agriculture.

S.

pesticide runoff from a residential neighborhood.

T.

a portion of the ocean protected from some human activities but open to others, such as the laying of cables and some fishing.