AnswersDRHS GA-GSE Environmental ScienceUnit Test

Unit Test — Unit test Answers

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21
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The Working for Water program helps conserve water by employing individuals to remove invasive plants.

A
T
B
F
22
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23

Which of the following is least likely to have difficulties with economic access to potable water?

A
Zimbabwe
B
Australia
C
India
D
None of the above
24

The Great Pacific Garbage Patch is best described as _______.

A
a floating island of garbage in the Pacific ocean the size of Texas
B
a garbage patch formed of clusters of plastic debris
C
a patch of densely polluted water the size of Texas in the Pacific ocean
D
the result of oceangoing ship pollution
25

Bottom trawling is a destructive fishing practice that destroys ocean habitats.

A
T
B
F
26

Which of the following best describes the effects of water pollution on aquatic ecosystems?

A
It can result in fish kills and restrictions on human consumption.
B
It can change the physiology of fish.
C
It can cause long-term alterations of aquatic ecosystems.
D
All of the above
27

The Safe Drinking Water Act limits the amount of pollution introduced into waterways.

A
T
B
F
28

Which of the following sources of pollution would be the most difficult to track and regulate?

A
lawn fertilizer runoff
B
a waste treatment plant
C
a factory
D
a nuclear power plant
29

How can alternative practices lead to a reduced impact on waterways?

A
Alternative practices will completely eliminate changes to waterways.
B
Alternative practices can completely reverse the damage already done to waterways.
C
Alternative practices will allow industry greater access to waterways.
D
Alternative practices can lead to a decrease in pollution, erosion, and damage to waterways.
30

Marine debris is best described as being composed of _______.

A
solid garbage
B
untreated sewage
C
toxic chemicals
D
things discarded by humans
31

Because they are manmade, fish farms are not considered fisheries.

A
T
B
F
32

Which of the following regulations is the primary law regarding water pollution?

A
The Safe Drinking Water Act
B
The Clean Water Act
C
The Marine Protection, Research, and Sanctuaries Act
D
WaterSense
33

Why has groundwater use increased?

A
the total amount of freshwater has decreased
B
more of the available freshwater is stored in glaciers and icecaps
C
governments have banned the use of freshwater in rivers and springs
D
the demand for freshwater has increased due to population growth
34

Desalination has no known negative impacts on the environment.

A
T
B
F
35

What is the greatest use of groundwater?

A
drinking
B
industry
C
agriculture
D
recreation
36

The EPA regulates the dumping of _______ in oceans as outlined by the Ocean Dumping Act.

A
industrial waste
B
sewage sludge
C
medical waste
D
all of the above
37

Which of the following best defines sustainable fishing practices?

A
Harvesting practices that maximize yields and profits.
B
Harvesting practices that maximize the yield per fisherman.
C
Harvesting practices that do not reduce the potential for future harvests.
D
Harvesting practices that reduce the potential for future harvests.
38

What is the greatest use of groundwater?

A
drinking
B
industry
C
agriculture
D
recreation
39

Human activity on land can have a profound influence on marine ecosystems.

A
T
B
F
40

Where is the water table located?

A
10 ft below the surface
B
below the saturated zone
C
at the top of the saturated zone
D
all of the above

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