Water Policy — Unit test Answers

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21
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Which of the following is true concerning hull fouling from commercial shipping and recreational boating?

A
It constitutes less than half of all nonnative species introductions.
B
The revenue brought in from these industries is relatively small.
C
It is difficult to prevent since ship hulls begin, conduct, and end voyages in water.
D
It is best combated by chemical treatments.
22
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A heat source could be considered a source of pollution..

A
T
B
F
23

Which of the following processes requires separate plumbing?

A
water reclamation
B
desalination
C
greywater use
D
none of the above
24

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
25

Which of the following is the most serious effect of water pollution for humans?

A
infectious diseases
B
algal blooms
C
toxic food chain effects
D
low-oxygen water
26

Aquifers are _______.

A
located below the water table
B
important sources of freshwater
C
located in the saturated zone
D
all of the above
27

Australian aborigines could not use wells in the desert due to lack of groundwater.

A
T
B
F
28

Which of the following does not contribute to water pollution?

A
forestry
B
industry
C
agriculture
D
none of the above
29

Which of the following is a way in which water resources are consumed?

A
drinking
B
industry
C
business
D
all of the above
30

Which of the following is not an effect of erosion on lakes?

A
water leakage
B
wearing away of sides
C
increased water levels
D
basin filling with sediment
31

Where is light penetration in a river or stream likely to be lowest?

A
the source
B
the mouth
C
the middle portion
D
none of the above
32

Why might it be beneficial to regulate what species of plants and animals people are allowed to own in particular environments?

A
Some species might become invasive and destructive if they escaped.
B
Some species may be dangerous to humans.
C
Nonnative plants and animals should only be used for commercial purposes.
D
There is no reason to restrict an individuals’ right to own plants or animals.

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