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____________________ are synthetic compounds that have been widely used as refrigerants and in spray propellants and foam blowing.

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Chlorofluo...

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To measure concentrations of carbon dioxide over time, scientists use ____.


A) samples from different levels of the atmosphere
B) samples from trees around the world
C) samples from fossils
D) samples from air bubbles in ice core at varying depths
E) samples from plants of various ages

F) B) and C)
G) A) and C)

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What is likely the most effective way to reduce acid deposition?


A) Offer tax breaks to companies that emit SO2.
B) Add phosphate fertilizer to acidified lakes.
C) Add more topsoil to thin soil with little buffering capacity.
D) Add lime to neutralize the acids.
E) Implement prevention approaches that reduce or eliminate emissions.

F) B) and D)
G) A) and C)

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The reality of the greenhouse effect is accepted by the vast majority of scientists.

A) True
B) False

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The Paris agreement specifies that wealthier countries must help poorer countries meet emissions targets.

A) True
B) False

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Satellite data and other measurements and models indicate that 75-85% of the observed ozone losses in the stratosphere since 1976 resulted from people releasing ____ and other ozone-depleting chemicals into the troposphere beginning in the 1950s.


A) CO2
B) CO
C) NOx
D) CFCs
E) UVB

F) C) and D)
G) C) and E)

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D

The EPA estimates that running a typical gas-powered riding lawn mower for an hour creates as much air pollution as driving 34 cars for an hour.

A) True
B) False

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True

Nitrogen oxides can combine with water in the atmosphere and form nitric acid, one of the components of harmful acid deposition.

A) True
B) False

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Eating less or no meat could help reduce ____________________ emissions.

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While climate change is a serious threat to natural ecosystems, it is not a threat to human health.

A) True
B) False

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Some research suggests that outdoor air pollution, mostly in the form of fine-particle pollution, contributes to the deaths of approximately 200,000 Americans every year.

A) True
B) False

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In cities, urban ____________________ worsen pollution because they block the movement of wind and make it harder for pollutants to disperse.

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The power of prevention was made clear by the 99% drop in atmospheric lead emissions after lead in gasoline was banned in 1976.

A) True
B) False

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What is an advantage to placing taxes and fees on carbon and energy usage?


A) Tax laws are typically very simple and straightforward.
B) Tax laws tend to have few, if any, loopholes.
C) Lower emissions are nearly guaranteed.
D) Tax laws and fees tend to be politically popular.
E) The administration is simple and revenues are predictable.

F) B) and D)
G) A) and C)

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The estimated tipping point of carbon dioxide levels in the atmosphere is ____________________ ppm.

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450

If the climate change tipping point is reached in the next few decades, it is expected that the ____________________ice sheet will collapse and melt.

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Antarctic,...

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Despite increases in gross domestic product, vehicle miles traveled, and energy use, emissions of the 6 major air pollutants have decreased in the United States between 1980 and 2015.

A) True
B) False

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Where are pollution levels up to 18 times higher inside than they are outside in traffic-clogged urban settings?


A) Office buildings
B) Construction sites
C) Fuel stations
D) Homes located near freeways
E) Inside automobiles

F) C) and D)
G) A) and B)

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The latest scientific research indicates that the net global effect of ____ cover changes is likely to increase atmospheric warming.


A) ice
B) water
C) soot
D) aerosol
E) cloud

F) D) and E)
G) C) and E)

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Explain why some experts consider indoor air pollution to be one of the most serious air pollution problems. In your answer, utilize some facts about indoor air pollution.

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1. Levels of 11 common pollutants are ge...

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