AnswersFL-2001340-Environmental Science Sem 2Limiting Factors and Humans

Sustainability Answers

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1
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Increases in the world’s population will require an increase in sustainable practices.

A
T
B
F
2
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More than 50% of ecosystems are currently being used unsustainably.

T
T
F
F
3

Building green can help conserve natural resources and reduce carbon dioxide emissions.

A
T
B
F
4

The use of _______ is expected to increase in the future.

A
coal
B
natural gas
C
renewable energy
D
all of the above
5

Why are carbon dioxide concentrations expected to increase?

A
Carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase.
B
Carbon dioxide concentrations are expected to increase, because of an increase in agriculture.
C
Carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use.
D
All of the above
6

Good land and production practices can help increase greenhouse gas emissions.

T
T
F
F
7

How is the world population projected to change in the next few decades?

A
It is projected to level off.
B
It is projected to decrease steadily.
C
It is projected to increase steadily.
D
It is projected to double within 5 years.
8

A local farmer began to follow a more sustainable practice. As a result, his levels of carbon emissions decreased by fifty percent. The soil quality will most likely

A
increase
B
decrease
C
stay the same
9

How can recycling materials lead to environmental sustainability?

A
Recycling materials helps decrease the amount of new materials taken from the environment.
B
Recycling materials helps increase the rate of carbon sequestration.
C
By recycling materials, the amount of biomass available for energy purposes is increased.
D
All of the above
10

Which of the following is not a way in which carbon sequestration can benefit soil?

A
decreased erosion
B
increased water quality
C
increased water storage
D
increased soil quality
11

What is the current greatest threat to agricultural sustainability?

A
erosion
B
water pollution
C
air quality
D
all of the above
12

How do conservation tillage practices in agriculture benefit the soil?

A
They increase soil erosion rates.
B
They decrease water absorption.
C
They decrease water storage.
D
They increase soil nutrient levels.
13

Which of the following is not a direct consequence of groundwater use?

A
reduced water storage
B
increased surface water levels
C
reduced river flow
D
decreased spring discharge
14

More than 50% of ecosystems are currently being used unsustainably.

T
T
F
F
15

Aquifer

A
Aquifers 1 and 3 may result in a reduced river flow.
A
Aquifer 2 may result in reduced surface water levels.
A
Aquifers 2 and 3 may result in decreased wetland and spring discharge.
A
Aquifer 3 may result in an increase in productivity.
16

Which of the following energy sources is expected to have the least growth in the next 20 years?

A
hydroelectricity
B
coal
C
natural gas
D
nonhydro renewables
17

Increases in the world’s population will require an increase in sustainable practices.

T
T
F
F
18

Which of the following is the most likely cause for future water shortages?

A
global warming
B
increased agriculture
C
water pollution
D
erosion
19

How do conservation tillage practices lead to agricultural sustainability?

A
Conservation tillage practices reduce the amount of water required to grow crops.
B
Conservation tillage practices help reduce soil erosion and maintain soil nutrient levels.
C
Conservation tillage practices naturally protect crops from insect damage, reducing the need for pesticides.
D
Conservation tillage practices reduce the amount of energy needed to produce crops.
20

Decreasing the use of pesticides and herbicides can help agricultural sustainability.

T
T
F
F

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