AnswersTX-Environmental Systems-BCASUnit Test

Water Pollution Answers

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1
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Which of the following is true concerning sources of water pollution?

A
Mine wastes and heavy metals become water pollution through storm water runoff.
B
Biodegradable materials like food, wood, and leaves are not considered pollution.
C
Petroleum byproducts and fuels end up as pollution principally from oil spills.
D
Pesticides and herbicides do not commonly become water pollutants.
2
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Point source pollution is much more difficult to track and clean up than nonpoint source pollution.

A
T
B
F
3

To be considered a source of water pollution, the source must include a chemical. Please select the best answer from the choices provided

A
T
B
F
4

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
5

Which of the following best describes pollution discharged by cruise ships?

A
Cruise ships only discharge sewage and liquid wastes.
B
Cruise ships discharge sewage, solid, liquid, and air pollution.
C
It is illegal for cruise ships to discharge untreated sewage in the ocean.
D
Cruise ships do not discharge oil or petroleum waste.
6

The principle difference between point source and nonpoint source water pollution is _______.

A
whether the pollution is organic or inorganic
B
the number of sources of pollution
C
the amount of pollution
D
whether it is from commercial or agricultural sources
7

Algal blooms, and the rapid proliferation of photosynthetic plankton can ultimately end up depleting all the oxygen from a body of water.

A
T
B
F
8

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9

Using a broom to clean sidewalks and driveways is a way to reduce water pollution.

A
T
B
F
10

Which of the following factors determines how harmful an introduced chemical will be on the environment?

A
type of chemical
B
concentration
C
weather conditions
D
all of the above
11

Changing your toilet can reduce water pollution because _______.

A
the sewage is partially treated in the toilet before entering the sewer system
B
chemicals added by new toilets neutralize the pathogens in the water
C
more efficient plumbing uses more water and creates larger volumes of waste
D
more efficient plumbing uses less water and creates smaller volumes of waste
12

How does de-icing roads with salt negatively impact the environment?

A
The road salt attracts deer that are then hit by motor vehicles.
B
It removes necessary salt from the local water courses.
C
The high salinity of the surface runoff is harmful to freshwater ecosystems.
D
The salt harbors salt eating bacteria that are toxic to animals.
13

Surface runoff is an example of nonpoint source pollution.

A
T
B
F
14

Which of the following factors determines how harmful an introduced chemical will be on the environment?

A
type of chemical
B
concentration
C
weather conditions
D
all of the above
15

Which of the following is true about impervious building materials?

A
Impervious surfaces prevent pollutants from entering the water supply.
B
Vegetation and gravel are common impervious materials.
C
Having fewer impervious surfaces improves water drainage.
D
All of the above
16

Which of the following is true about impervious building materials?

A
Impervious surfaces prevent pollutants from entering the water supply.
B
Vegetation and gravel are common impervious materials.
C
Having fewer impervious surfaces improves water drainage.
D
All of the above
17

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
18

Which of the following is not a cause of water pollution?

A
jet fuel
B
laundry soap
C
ammonia
D
none of the above
19

Changing your toilet can reduce water pollution because _______.

A
the sewage is partially treated in the toilet before entering the sewer system
B
chemicals added by new toilets neutralize the pathogens in the water
C
more efficient plumbing uses more water and creates larger volumes of waste
D
more efficient plumbing uses less water and creates smaller volumes of waste
20

The principle difference between point source and nonpoint source water pollution is _______.

A
whether the pollution is organic or inorganic
B
the number of sources of pollution
C
the amount of pollution
D
whether it is from commercial or agricultural sources

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