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Which type of stimulus is an allergen, such as pollen? A. response to a stimulus B. external stimulus C. internal stimulus D. inborn stimulus
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4 votes
Which type of stimulus is an allergen, such as pollen?

A. response to a stimulus


B. external stimulus


C. internal stimulus


D. inborn stimulus

User Smohamed
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2 Answers

1 vote
It is A response to a stimulus
User BRogers
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6.0k points
6 votes
A. response to a stimulus
User Mandakh
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