D 
because it reflects the same shape of the figure on the top half
        
                    
             
        
        
        
<span>Cenozoic Era........................</span>
        
             
        
        
        
It penetrates the skin and can cause mutations.
        
             
        
        
        
<span>They create energy for the cell.</span>
        
                    
             
        
        
        
Looking for someone in 10th grade biology? How can I help you.