Basically, because it controls it. It sends all the signals to everything and tells them what to do. Without the brain, nothing would happen, and you would die.
Hope this helps.<span>
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Genus and species. I know this because i am learning this now and i asked the same questio
        
             
        
        
        
Speed = 17.2 m/s...................
        
             
        
        
        
By breaking down food particles gradually 
        
                    
             
        
        
        
Depending on how good that species is at adapting to new environments that species of animals could adapt overtime, or die