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Vaishali Gaur
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Posted 5 year ago
Vaishali Gaur 
Hay fever is an allergic reaction to the presence of the following in the air:

A. Dust      

B. Smoke

C. Pollen    

D. Moisture
4 Answer(s)
Nikku Yadav
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Posted 5 year ago Nikku Yadav

Itchy eyes, a congested nose, sneezing, wheezing and hives: these are symptoms of an allergic reaction caused when plants release pollen into the air, usually in the spring or fall. Many people use hay fever as a colloquial term for these seasonal allergies and the inflammation of the nose and airways.
Shweta Jain
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Posted 5 year ago Shweta Jain Teacher

I think A and B
Baljeet Kaur
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Posted 5 year ago Baljeet Kaur

C . Pollen Can be dust also but more specific is due to pollen
Seema Kumari
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Posted 5 year ago Seema Kumari Gurushala Teacher Coach

Answer is A. Dust and B. Smoke