The food ingredient that is important for brain development is GLUCOSE.
Glucose is the only type of nutrient that the brain can use to carry out its biochemical activities. The brain usually use about 20%  of the glucose content that is available in the blood. Absolute lack of glucose for brain use can cause one to go into coma.<span />
        
             
        
        
        
Shleiden and Theodor Schwann were the first to recognize that all plants and animals are composed of cells.
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Answer:
 #IN GIRLS
* adolsence 
* menstruation 
#IN BOYS
* penis strts turning big
*beard starts coming of face 
 
        
                    
             
        
        
        
D. Most of the energy that drives metabolism is supplied by ATP