AP Environmental Science Quiz
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ATMOSPHERIC POLLUTION
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A city's AQI improved as PM
2.5
_{2.5}
2.5
dropped 35→12 µg/m
3
^3
3
(2010–2023). Primary health benefit?
A
Lower risk of cardiovascular and respiratory disease because fine particles penetrate deep into lungs and can enter the bloodstream.
B
Reduced risk of skin cancer because PM
2.5
_{2.5}
2.5
is the main absorber of ultraviolet-B radiation in the stratosphere.
C
Reduced risk of malaria because PM
2.5
_{2.5}
2.5
directly kills mosquito larvae by increasing dissolved oxygen in ponds.
D
Lower risk of hearing loss because particulate matter primarily damages the auditory nerve after inhalation exposure.
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