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is there a picture or something attached?
 
        
                    
             
        
        
        
Answer:
The average ages at which an individual displays certain abilities are known as developmental norms .
 
        
                    
             
        
        
        
I listen to chillhop personally and that helps. Making notes creative , finding different ways to study , use partners or make a game because studying doesnt always have to be boring I jope this helped you good luck