Member since June 5, 2010

kal99

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kal99
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why do we yawn?
Fri 30 Dec, 2011 11:21 am - I don't see why "feeling tired" would not suffice, if indeed a "signal to the mind" is necessary. Do other organisms need a "sleep signal to the mind" in order to... (view)
why do we yawn?
Fri 2 Dec, 2011 11:53 am - So what you are saying, is that yawning induces sleep, and that is why it exists? (view)
Why Do People Have Different Goals And Beliefs, If We All Have The Same Basic Needs?
Sat 5 Jun, 2010 12:46 pm - Why Do People Have Different Goals And Beliefs, If We All Have The Same Basic Needs? (view)
 
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