AnswersFL-2000310-Biology 1 Sem 2 - FlexHuman Impact on the Environment

Human Impact on the Environment — Cumulative exam Answers

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1
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Which of the following is a difficulty associated with environmental protection?

A
cost
B
unpredictability
C
sustainability
D
all of the above
2
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The introduction of Caulerpa, also known as killer algae, into California was ultimately the result of _______.

A
hull fouling
B
the aquarium trade in exotic, nonnative aquatic species
C
intentional release
D
an algae farming company
3

Which of the following statements about pesticides is true?

A
Pesticides provide plants with essential nutrients.
B
Pesticides prevent the destruction of crops.
C
Pesticides are never harmful to plants.
D
Pesticides are never harmful to animals.
4

Which of the following is not a manmade cause of global warming?

A
burning fossil fuels
B
deforestation
C
respiration
D
population growth
5

What is the most important consideration for environmental policy makers?

A
popular opinion
B
environmental health
C
cost
D
none of the above
6

Which of the following changes to waterways is only the result of human activity?

A
erosion
B
temperature fluctuations
C
flooding
D
chemical pollution
7

How can resource conservation benefit the environment?

A
Resource conservation can help preserve natural habitats.
B
Resource conservation can reduce water pollution.
C
Resource conservation can reduce air pollution.
D
All of the above
8

Why does fossil fuel use in the United States make the U.S. vulnerable to the political wishes of foreign countries?

A
The US is a net exporter of fossil fuels.
B
Fossil fuels lead to global climate change.
C
The US imports much of its petroleum from foreign countries which set the prices.
D
All of the above.
9

Which of the following can be reduced by the use of renewable energy sources?

A
social costs
B
economic costs
C
environmental costs
D
all of the above
10

Which of the following aspects of the environmental movement addresses the public’s right to intervene in environmentally damaging activities on private land?

A
environmental justice
B
environmental sociology
C
environmental law
D
environmental activism
11

Which of the following is not released by trees into the atmosphere?

A
oxygen
B
water vapor
C
ozone
D
none of the above
12

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

A
T
B
F
13

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
14

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.
15

Deforestation has no direct impact on reptile species.

A
T
B
F
16

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
17

Reclamation restores an environment affected by mining to a state where it can sustain its ecosystem.

A
T
B
F
18

Soil compaction results from _______.

A
the reduction or elimination of pore space in soil
B
the weight of heavy machinery on soil
C
livestock walking over soil
D
all of the above
19

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
20

The largest supply of Earth’s freshwater is stored in _______.

A
lakes and rivers
B
groundwater
C
the atmosphere
D
glaciers and icecaps

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