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    Biology
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    Biology Life on Earth
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    Exam 25: Animal Behavior
  5. Question
    Smiling When Happy Seems to Be an Expression Common to All
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Smiling When Happy Seems to Be an Expression Common to All

Question 2

Question 2

Multiple Choice

Smiling when happy seems to be an expression common to all human societies, suggesting that this behavior is probably:


A) genetic in origin.
B) learned.
C) altruistic.
D) based on social standing.

Correct Answer:

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