AnswersSC332 Environmental Science BSoil and Agriculture

Soil and Agriculture — Unit test Answers

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1
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The oceans were formed when the earth cooled and water vapor condensed to create rain.

A
T
B
F
2
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It is crucial to study ocean microbes because _______.

A
they control the major biogeochemical cycles that keep Earth’s biosphere in balance
B
they are a significant source of greenhouse gases and pollution
C
they are frequently used as food sources in developing nations
D
they provide a significant alternative energy source used to replace coal and oil
3

Which of the following forest management practices is the most harmful to forest ecosystems?

A
clearcutting
B
shelterwood cutting
C
group selection
D
single tree selection
4

Which of the following statements about forestry education is true?

A
All educational facilities cover forestry to the same depth.
B
Individuals can pursue doctorates in forestry in any state.
C
Program focus will remain the same from state to state.
D
Some states have greater access to forestry programs than others.
5

Wetlands occurring in areas with a large amount of trees are most likely _______.

A
swamps
B
bogs
C
marshes
D
none of the above
6

Dutch agriculture is one of the most labor intensive types of agriculture in the world.

A
T
B
F
7

Wetlands help reduce erosion through _______.

A
nutrient absorption
B
sediment trapping
C
bacterial absorption
D
all of the above
8

The U.S. Integrated Ocean Observing System (IOOS) is best described as _______.

A
a public and private partnership to increase understanding of the oceans
B
a program to improve ocean safety
C
a partnership aimed at protecting the environment
D
all of the above
9

Which of the following regions has the highest population living in rural areas?

A
Asia
B
Africa
C
North America
D
Europe
10

Which of the following best describes the use of rainforest plants as anticancer drugs?

A
Most rainforest plants have been tested for their cancer fighting properties.
B
Twenty-five percent of the active ingredients in cancer drugs are exclusively rainforest plants.
C
The most powerful anticancer drugs are not rainforest plants.
D
All of the above
11

Which of the following does not explain the importance of mangrove forests?

A
They provide shelter to organisms on high energy coasts.
B
They help prevent erosion along coasts.
C
They increase surface runoff and flooding.
D
They filter and process pollutants out of the environment.
12

Which of the following best describes the uses of private land?

A
Private land cannot be used to operate businesses.
B
After initial construction. the uses of private land do not change.
C
It can be used for a variety of activities and businesses.
D
None of the above.
13

How has human use of salt marshes changed over time?

A
Humans have come to value salt marshes and now seek to preserve and restore them.
B
Humans now use drained salt marshes exclusively for agriculture.
C
Humans have begun to use salt marshes for landfills.
D
Humans have begun to use marsh land for housing and commercial development.
14

Which of the following cities has experienced more upward growth than urban sprawl?

A
Los Angeles, California
B
Bangkok, Thailand
C
Tokyo, Japan
D
Jakarta, Indonesia
15

Which of the following is the most damaging method of soil remediation?

A
soil excavation and disposal
B
soil aeration
C
heating and vapor extraction
D
microbial digestion
16

The principle difference between where salt marshes and mangrove forests grow is the salinity of the water.

A
T
B
F
17

How can zoning laws be beneficial to a city’s residents?

A
They prevent new business development.
B
They can prevent new development that would harm established residents.
C
They limit the maximum height of buildings.
D
They restrict who can live in a city.
18

Which of the following is true concerning land management methods for corporations.

A
The best strategy is a combination of government regulation and voluntary cooperation.
B
The best strategy is to rely on businesses to voluntarily pursue green business practices.
C
Corporations do not follow established land management strategies.
D
The best strategy is to impose government regulations on land management methods.
19

Rainforests are not exclusively found near the equator.

A
T
B
F

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