The answer is ...They should check their facts and exchange questions with each other. . 
Hope this helps
        
                    
             
        
        
        
Conventional wisdom holds that a baby's height, weight, and head circumference should be in the same percentile. While that's often the case, don't fret if your baby's percentiles seem out of whack.
        
                    
             
        
        
        
The statement that minerals are inorganic substances that the body cannot produce on its own is true. Essential minerals are sometimes divided up into major minerals (macrominerals) and trace minerals (microminerals).
 Minerals are essential constituents of body fluids and tissues; they are components of enzyme system and are involved in the formation of bones and teeth.