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23 August, 21:48

Which type of stimulus is an allergen, such as pollen?

A.

inborn stimulus

B.

external stimulus

C.

response to a stimulus

D.

internal stimulus

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Answers (2)
  1. 23 August, 22:03
    0
    Since it is outside your body, the answer is B, external stimulus
  2. 23 August, 22:05
    0
    Since it's an outdoor door allergy, that that means it's an external stimulus. Hope this is right.
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