Because as trials go on scientists discover more information and alter the theories and that is why they are referred to as a "theory" instead of a scientific "law"
        
             
        
        
        
the golgi 
hope this helps !
        
             
        
        
        
<span>A series of complexes from electron
donors to acceptors happen in an electron transport chain.  Due to the pumping action in the chain,
protons result to having a high concentration in the intermembrane space yet a
low concentration in the mitochondrial matrix.</span>
 
        
             
        
        
        
Kodak black need some milk he a good rapper