Eccentricity is the ratio of the distance from the center of an ellipse to one of its foci to the distance from the center of the ellipse to one of its vertices. 
        
             
        
        
        
it forms covalent bonds by sharing electrons  
        
                    
             
        
        
        
Answer:
The scientist is studying oxygen which can also be found in protien. oxygen is the element which makes up to 65% of human body mass. It is also found in proteins inside the body.