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1 vote
What of the following describes how an organism responds to external stimuli

1.a person yawns when oxygen is low in the lungs
2.the pupil of the eye gets larger when exposed to darker conditions
3.a dog eats food when its hungary
4.a woman drinks water when she is thirsty

User Nubinub
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2 Answers

4 votes
Your answer should be 1. A person yawns when oxygen is low in the lungs.

Hope this helped!
User Mastef
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3 votes
it is the first one : a person ...

User Beyowulf
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8.7k points
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