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6 June, 08:20

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

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  1. 6 June, 08:23
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    a decrease in oxygen levels in the blood during exercise
  2. 6 June, 08:50
    0
    A. an increase in the amount of water available to a plant
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