AnswersDRHS GA-GSE Environmental ScienceUnit Test

Unit Test — Unit test Answers

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1
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Soil fertility is best described as being dependent upon _______.

A
the balance between organic matter and mineral nutrients
B
soil color and the local climate
C
topography and the local climate
D
soil texture
2
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How does mining affect local populations?

A
Mining is a vital part of the economy of surrounding towns.
B
Mining introduces pollution into local water supplies.
C
Mining disrupts local populations of flora and fauna.
D
All of the above are true.
3

The presence of organic material in soil makes it more productive for plant growth.

A
T
B
F
4

How might environmental manipulation of a crop have unexpected consequences?

A
The new crop may require more water than the original.
B
The crop may harm the environment.
C
The yield may be reduced.
D
All of the above
5

Which of the following is a way that minerals are used?

A
industry
B
construction
C
technology
D
all of the above
6

Where is the carbon taken in by plants during photosynthesis stored?

A
the ground
B
plant structures
C
the air
D
all of the above
7

Permafrost (gelisol) is considered a hearty, robust soil type.

A
T
B
F
8

Cities that have available space in surrounding areas, such as Los Angeles, are likely to experience upward growth rather than urban sprawl.

T
T
F
F
9

The urban migration trend has stopped worldwide.

A
T
B
F
10

Which of the following is not true concerning cover crops?

A
they prevent soil erosion
B
they can fix nitrogen in soil
C
they are sold as cash crops
D
they add organic matter to soil
11

Rainforests are not generally considered a source of _______.

A
foods
B
spices
C
medicines
D
none of the above
12

Pesticides are best described as _______.

A
polluting chemicals toxic to all living things
B
chemicals that destroy 33% of the world’s potential food supply
C
toxic chemicals used to control weed populations
D
toxic chemicals used to control pest populations
13

Which of the following is not a reason that humans genetically engineer trees?

A
insect resistance
B
pharmaceutical production
C
faster growth
D
none of the above
14

Foresters work for private companies as well as government agencies.

A
T
B
F
15

Which of the following is a way that trees have been negatively impacted by human use?

A
deforestation
B
pollution
C
reduction
D
all of the above
16

Which of the following methods of agriculture is the most reliant upon technology and automation?

A
rangeland grazing
B
American agriculture
C
traditional rice cultivation
D
Dutch agriculture
17

The principal characteristic that differentiates temperate and tropical rainforests is __________.

A
latitude
B
oxygen turn over
C
the continent they are on
D
longitude
18

Which of the following is a reason conflicts over zoning decisions can become a divisive issue?

A
Zoning decisions are often wrong and result in significant financial hardship for a city.
B
Zoning decisions do not always change over time and can become antiquated.
C
Establishing zoning types is an expensive process.
D
Zoning regulations prevent new businesses from competing with established businesses.
19

Which of the following best describes what led to London’s “killer fog” in 1952?

A
Pollution from the air contaminated the water supply which is what killed people.
B
Millions of coal fires and stagnant air caused toxic fumes to build up in the air.
C
Poor city design led to faulty ventilation in houses.
D
Soot from forest and wildfires in the surrounding areas blew over the city.
20

Which of the following could be found on either public or private land?

A
state park
B
single-family residence
C
mine
D
factory

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