Hay fever is an allergic reaction to the presence of the following in the air: - Study24x7
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Gajendra Rathore
20 Apr 2019 11:25 AM study24x7 study24x7

Hay fever is an allergic reaction to the presence of the following in the air:

A

Dust      

B

Smoke

C

Pollen    

D

Moisture

SSC Class 10 Sciences
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