The answer is a tell me if I am wrong.
        
                    
             
        
        
        
Answer:
its counting by 4 the multi 4,8,12,16
 
        
             
        
        
        
Answer:
Oceanic Crust/Continental Crust
Explanation:
 It is a destructive plate boundary between the oceanic crust of the Nazca plate and the continental crust of the South American plate.