AnswersSC332 Environmental Science BThe Water We Use

Changing Waterways Answers

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1
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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
2
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Which of the following methods would help decrease marine pollution?

A
government regulation of agriculture
B
government regulation of industry
C
reduction in chemical use
D
all of the above
3

Flooding on rivers is caused by human activity rather than natural events.

A
T
B
F
4

How is thermohaline circulation influenced by salinity and temperature?

A
It is driven by density gradients, which are affected by salinity and temperature, with cold water and water with higher salt concentrations being more dense.
B
It is driven by density gradients, which are affected by salinity and temperature, with warm water and water with higher salt concentrations being more dense.
C
It is driven by density gradients, which are affected by salinity and temperature, with warm water and water with lower salt concentrations being more dense.
D
It is driven by density gradients, which are affected by salinity and temperature, with cold water and water with lower salt concentrations being more dense.
5

Which of the following does not represent an impact of recreational activity on springs?

A
destruction of native vegetation
B
wildlife disruption
C
decreased soil erosion
D
water pollution
6

How can alternative practices lead to a reduced impact on waterways?

A
Alternative practices will completely eliminate changes to waterways.
B
Alternative practices can completely reverse the damage already done to waterways.
C
Alternative practices will allow industry greater access to waterways.
D
Alternative practices can lead to a decrease in pollution, erosion, and damage to waterways.
7

The majority of the debris found in the garbage patch is _______.

A
large plastic bottles
B
sewage
C
trash from landfills
D
small pieces of plastic
8

Which of the following is a source of water pollution?

A
sewage
B
oil spills
C
fertilizers
D
all of the above
9

Which of the following is an effect of fossil fuel emission on oceans?

A
decreased pH
B
decreased carbonate concentrations
C
increased CO2 absorption
D
all of the above
10

Over time, most lakes grow larger due to erosion.

A
T
B
F

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