Subject: why do people smile?
Date: Mon Feb 7 16:23:48 2000
Posted by Jenna Richman
Grade level: 7-9
School: White Hill
City: San Anselmo State/Province: California
Country: USA
Area of science: Evolution
ID: 949962228.Ev
Message:
Why do we as humans smile when we are happy since no other animal does? How
did we develop this instinct? why did only we develop it?
Re: why do people smile?
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