Answer:
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When plates divide or separate it creates a divergent boundary.
        
             
        
        
        
<span>We have two surfaces of nerve cell the outer and inner surface 
- resting : when the outer layer ion charges more positively than the inner layer - depolarization : we have the counter part of this state 
- repolarization : return to the polarization 
- hyperpolarization : the inner negative ion charges will be more negative even more than the resting potential
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