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Questions  >>  CBSE XII  >>  Biology
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In the metropolitan cities of India, many children are suffering from asthma/allergy. What are the m

In the metropolitan cities of India, many children are suffering from asthma/allergy. What are the main causes of this problem? Give some symptoms of allergic reactions.

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Allergy is an exaggerated response of body's immune system to antigens present in the environment. In metropolitan cities, air pollution is high. The air pollutants function as allergens and cause hypersensitivity with symptoms like watery eyes, sneezing running nose difficulty in breathing.
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