Hay fever is due to the presence of which thing in the air ?


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Hay fever is due to the presence of which thing in the air ?
asked Aug 23, 2012 in Miscellaneous Questions by anju Moderator (1,617,850 points)
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Hay fever is due to the presence of Pollen  in the air.
answered Aug 23, 2012 by anju Moderator (1,617,850 points)

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