AnswersTX-Environmental Systems-BCASUnit Test

Unit Test — Unit test Answers

38 verified answers3 views
61
Free Preview

The use of wells to obtain drinking water is a modern convenience.

A
T
B
F
62
Free Preview

Which of the following might occur if people fail to conserve water?

A
increased sewage system failures
B
increased numbers of natural pollution filters
C
increased water supply
D
increased wildlife habitats
63

What is a key difference between greywater use and water reclamation?

A
If collected separately, greywater can be used for certain applications without treatment.
B
Greywater use is more costly than water reclamation.
C
Water from reclamation is always safe for drinking, while greywater is not.
D
Greywater has been mixed with sewage, while reclaimed water is derived from clean water.
64

Which of the following most significantly determines a community's access to potable water?

A
access to clean raw water sources
B
the availability of money
C
local drought conditions
D
the level of industrial development
65

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
66

Which of the following best explains the importance of water to humans?

A
Water is essential for sustaining human life.
B
Water is important for shipping and trade.
C
Water is a valuable, profitable commodity.
D
All of the above
67

Desalination has no known negative impacts on the environment.

A
T
B
F
68

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

A
T
B
F
69

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
70

Which of the following best describes the availability of freshwater on Earth?

A
Less than 1% of Earth’s water is liquid freshwater.
B
More than two thirds of Earth’s freshwater is stored in glaciers and icecaps.
C
99% of liquid freshwater on Earth is stored as groundwater.
D
All of the above.
71

Introduced sewage in water systems _______.

A
decreases levels of phosphorus and nitrogen
B
increases oxygen levels
C
increases concentrations of solids
D
leads to decreases in the temperature

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Unit Test

Quiz
14 verified answers

Water Pollution

Quiz
14 verified answers

Water Policy