Air Resources Answers

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1
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What was the main reason for creating the EPA?

A
enforce the Clean Air Act
B
create new laws to keep the air clean
C
provide funding for air pollution studies
D
study the negative effects of polluted air
2
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What was the order of steps taken by the United States to clean the air?

A
enact the Clean Air Act, establish funding to study how to clean the air, create the EPA, and find cost-effective ways to keep the air clean
B
establish funding to study how to clean the air, enact the Clean Air Act, create the EPA, and find cost-effective ways to keep the air clean
C
find cost-effective ways to keep the air clean, establish funding to study how to clean the air, create the EPA, and enact the Clean Air Act
D
create the EPA, enact the Clean Air Act, find cost-effective ways to keep the air clean, and establish funding to study how to clean the air
5

Study the image of a plant.

Question illustration
A
oxygen
B
nitrogen
C
water vapor
D
carbon dioxide
6

Which factor is a major contributor to outdoor air pollution?

A
radon
B
fossil fuels
C
ultrafine particles
D
carbon monoxide
8

What happens when the atmosphere interacts with the biosphere?

A
Winds are produced.
B
Groundwater supplies are replenished.
C
Carbon dioxide is cycled during plant respiration.
D
Volcano eruptions influence the cycling of nitrogen.
9

Which role do ultrafine particles play in dirty air?

A
They contribute to less than 13,000 premature deaths a year.
B
They can worsen symptoms for people with breathing difficulties.
C
They are easily removed from the air when people see them floating.
D
They are constantly filtered by the nose, which prevents lung absorption.
10

Why was 1990 an important year regarding air quality?

A
The United States took first steps to keep the air clean.
B
The United States created the Environmental Protection Agency.
C
Modifications and improvements were made to the Clean Air Act.
D
Funding was established under the Clean Air Act to study air pollution.

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