I believe the answer is: John Dewey
He popularized the method of taking a more functional approach  ( such as experiments and direct observation) in Children's education, not reading theory alone.Because of this, John Dewey is known as <span> the father of the progressive education movement and his method has been used ever since.</span>
        
             
        
        
        
Answer:
elimination of urine.
Explanation:
elimination of urine.
Micturiition -  it is the process involving the removal of urine from a urinary bladder.  
the urinary bladder is that place that stores urine for a certain period of time till it fills, once it gets fill excess pressure exert on the bladder due to which it gets necessary to go for urination.
Dsiorder in micturition can be done in the form of  disturbance in the urine frequency,change in the composition of urine etc
 
        
             
        
        
        
You just answered your own question? what?
        
                    
             
        
        
        
I think It's either the second or last option. I'd go with the last option though.