What happen If the earth stop spin
From: http://faculty.ucc.edu/egh-damerow/earth_2.htm
If earth stop there would be no season and no day and light. It would change to half of earth side desert and other side for the ice desert. There will be sunlight 24 hours on half of the side and night for half of other side.
If it happens like that there would no life would form; it would be a dead planet.