AnswersTCISD-Environmental Systems B ICWater Pollution

Water Pollution — Unit test Answers

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1
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Fish that feed on sediment will most likely be found in _______ rivers.

A
shallow
B
narrow
C
deep
D
fast-moving
2
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What is the greatest use of groundwater?

A
drinking
B
industry
C
agriculture
D
recreation
3

Freshwater is used principally as drinking water.

A
T
B
F
4

The Karez well system _______.

A
was the first known use of wells
B
was a postindustrial system
C
transported groundwater from a distance
D
all of the above
5

Due to decreased light penetration, which area of rivers and streams will have less diversity of plant life?

A
the source
B
the mouth
C
the middle portion
D
none of the above
6

Which of the following statements about desalination is true?

A
Desalination is less expensive than water reclamation.
B
Desalination uses large amounts of energy.
C
Desalination is the main process used to provide water for crop irrigation.
D
All of the above
7

Which of the following is true of salt lakes?

A
The water flowing in to salt lakes comes directly from the ocean.
B
Salt lakes are formed when river bends are cut off.
C
The water flowing in to salt lakes contains minerals.
D
Salt lakes do not experience shrinking due to erosion.
8

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
9

Which of the following practices could help reduce erosion of water banks?

A
buffer strips
B
natural fertilizers and pesticides
C
decrease in fossil fuel emissions
D
all of the above
10

Access to potable water is most heavily limited by _______.

A
money
B
precipitation
C
raw water supplies
D
climate
11

Which of the following is not an option for solving the world water crisis?

A
desalination
B
finding new sources of freshwater
C
reducing overconsumption
D
wastewater treatment plants
12

Invasive species often unbalance the ecosystems into which they are introduced because _______.

A
they did not co-evolve with the natural species and lack natural controls, like predators
B
they breed quickly and have the potential to overpopulate an area
C
they consume local resources
D
none of the above
13

It is best to say that efficient plumbing _______.

A
reduces water pollution by using less water
B
reduces water pollution by using cleaner water
C
increases water pollution by using more water
D
reduces water pollution by using dirty water
14

Which of the following is not a way that nonnative organisms are introduced to new aquatic ecosystems related to commerce?

A
cargo ship hulls
B
recreational boats
C
escape from aquariums
D
migration
15

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
16

Which of the following is not a characteristic of rivers and streams?

A
vary in size
B
mainly saltwater
C
part of the water cycle
D
flow toward other bodies of water
17

Which of the following is a way that humans impact rivers and streams?

A
pollution
B
dams
C
flooding
D
all of the above
18

Potable water delivery systems are characterized by _______.

A
high infrastructure costs
B
aqueducts
C
glass bottles
D
rivers
19

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

A
T
B
F
20

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

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