Why do only humans blush ?
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Science writer Stuart Blackman discusses the unique expression of blushing. Blushing is caused by the dilation of blood vessels in the facial skin at times of embarrassment. Darwin considered it “the most peculiar and most human of all expressions”, and it appears to be unique to ourselves.
Answered by
1
Answer:
Science writer Stuart Blackman discusses the unique expression of blushing. Blushing is caused by the dilation of blood vessels in the facial skin at times of embarrassment. Darwin considered it “the most peculiar and most human of all expressions”, and it appears to be unique to ourselves.
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