Which is an example of an internal stimulus?
A:a decrease in oxygen levels in the blood e...
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Biology, 12.03.2020 20:26 stephanieanaya7
Which is an example of an internal stimulus?
A:a decrease in oxygen levels in the blood exercise
B:a sudden change of air temperature
C:an artificial light that attracts insects
D:an increase in the amount of water available to a plant
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