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Svetllana [295]
3 years ago
10

14. Allergies are caused by which of the following?

Biology
1 answer:
BaLLatris [955]3 years ago
8 0
C. reactions to antigens. These come in the form of pollen, grass, dust etc.
Hope this helps :)
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7. Depends on what kind you're looking for. I'd look it up for your specific topic.

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