Air pollution is often responsible for
a. acoustic trauma.
b. increased cases of asthma.
c. increased cases of ulcers and hearing loss.
d. increased sewage, chemicals, and radioactive wastes.

B. Increased cases of asthma, 
the large amount of dirt/dust irritates our breathing tracts and those with asthma may suffer from an episode much easily breathing in polluted air. 

_Brainliest if i helped!

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