AnswersMFISD ENVIRONMENTAL SYSTEMS B 22-23 CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

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Which of the following statements about change in ecosystems is true?

A
Ecosystems experience change through human activity only.
B
Ecosystems experience change through natural events only.
C
Ecosystems experience no change.
D
Ecosystems experience change through human activity and natural events.
42
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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
43

It is important to maintain septic systems in order to _______.

A
prevent treated sewage from contaminating groundwater
B
process human waste into fertilizer
C
prevent untreated sewage from contaminating groundwater
D
none of the above
44

Which of the following statements about turning points in environmental policy is true?

A
Environmental policy has changed over time as a result of pressure from industry.
B
Turning points in environmental policy were typically the result of urban expansion.
C
Turning points in environmental policy have come about through increased public awareness.
D
Environmental policy has changed little over the history of the United States.
45

Which of the following is a potential obstacle to the commercial development of brownfields?

A
the presence of pollutants
B
environmental cleanup laws
C
the costs of environmental cleanup
D
all of the above
46

The efforts of governments and businesses toward conservation and preservation have had a positive impact on the environment.

A
T
B
F
47

How does energy from the Sun travel to Earth?

A
through radiation
B
through convection
C
through conduction
D
through the movement of particles
48

Which statement describes the weather and climate in a tropical region?

A
The angle of the Sun’s rays affects daylight hours, creating warm temperatures all year.
B
The temperature is different in summer and winter because the region is at a high elevation.
C
The angle of the Sun’s rays controls the amount of precipitation experienced in the region.
D
Rain in the summer and drought in the winter occur because the region is at a high elevation.
49

Which statement best describes the availability of nonrenewable energy resources?

A
Their supplies will be completely used up within ten years.
B
They are readily available in all countries.
C
Their exact amounts are not currently known.
D
They are stored in primary forests around the world.
50

Most people in cities get their water _______.

A
by supplying it themselves
B
by delivery through pipes
C
through private suppliers
D
all of the above
51

Forest management practices can reduce the negative impact of wood harvesting.

A
T
B
F
52

Which of the following scenarios is representative of how agricultural practices can affect the environment?

A
increased oxygen levels in a pond due to fertilizer runoff
B
sediment accumulation in a body of water near a farm
C
soil compaction caused by tillage
D
increased plant growth caused by the application of herbicides
53

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
54

Pollution in the _______ will have the greatest effect on human health.

A
troposphere
B
stratosphere
C
mesosphere
D
thermosphere
55

Which of the following is a possible cost of using renewable resources?

A
loss of animal species
B
land degradation
C
lower availability of freshwater
D
all of the above
56

Which of the following about carbon sinks is not true?

A
They emit more carbon than they take in.
B
They take in more carbon they emit.
C
They store carbon from the atmosphere.
D
They include oceans and forests.
57

How does groundwater become polluted?

A
Pollutants mixed with water pass through permeable layers above the aquifer.
B
Factories dump their waste directly into aquifers.
C
Refuse infiltrates the water table when garbage is dumped.
D
All of the above
58

Which of the following could cause a habitat change?

A
introduction of an invasive species
B
a wildfire
C
a mudslide
D
all of the above
59

Which of the following statements about turning points in environmental policy is true?

A
Environmental policy has changed over time as a result of pressure from industry.
B
Turning points in environmental policy were typically the result of urban expansion.
C
Turning points in environmental policy have come about through increased public awareness.
D
Environmental policy has changed little over the history of the United States.
60

Which of the following is true about ice ages?

A
forests are plentiful and common
B
biodiversity is reduced
C
ecosystems are created
D
glaciers recede

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