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Biology 11 Online
OpenStudy (anonymous):

Which is an example of an internal stimulus? A. a sudden change of air temperature B. an artificial light that attracts insects C. an increase in the amount of water available to a plant D. a decrease in oxygen levels in the blood during exercise

OpenStudy (anonymous):

i believe its D

OpenStudy (anonymous):

@MelodicSymphony Thank you!

OpenStudy (anonymous):

anytime :)

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