Alright, but the meat of the question is why do you classify some actions as right or wrong?
Evolution is responsible for everything.
So when you have X, Y, and Z attributes, why do you say only Z is a moral behavior?
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http://i498.photobucket.com/albums/rr345/Rakaputra/pjbasis.png
SuperNiceDog - 1, pjbasis - 0