Changing Waterways — Unit test Answers

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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
23

Which of the following processes requires separate plumbing?

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

Aquifers are _______.

A
located below the water table
B
important sources of freshwater
C
located in the saturated zone
D
all of the above
25

Surface water standards for recreation are determined by the Clean Water Act.

A
T
B
F
26

Which of the following best explains the current state of the majority of the world’s fisheries?

A
they are being sustainably harvested
B
they are currently overfished
C
they are currently underfished
D
they are already depleted
27

A heat source could be considered a source of pollution..

A
T
B
F

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