Sustainability Answers

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1
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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.
3

Energy sustainability can best be achieved by using ______.

A
nonrenewable energy sources
B
renewable energy sources
C
carbon sequestration
D
recycled plastics
4

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.
6

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
7

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

A
global warming
B
increased agriculture
C
water pollution
D
erosion
8

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

A
coal
B
natural gas
C
renewable energy
D
all of the above
13

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
14

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.
15

What is the current greatest threat to agricultural sustainability?

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

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