AP Environmental Science Quiz
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LAND AND WATER USE
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A city expands public transit; which change most directly reduces urban air pollution?
A
Increased vehicle miles traveled as commuters take longer routes, raising NOx and VOC emissions and worsening photochemical smog.
B
Reduced per-capita gasoline combustion as fewer single-occupancy trips occur, lowering emissions of NOx, CO, and particulate matter.
C
Higher coal combustion at power plants always exceeds savings, guaranteeing net increases in urban ozone and particulates.
D
More idling at stations increases emissions per passenger, making transit consistently worse than private vehicles for air quality.
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