I've checked all the options and I think that the right answer looks like this: Mollusks have highly developed olfactory receptors.
 
        
             
        
        
        
Answer:
125.6
Explanation:
Area of a circle = πr^2
Area of circle 1 = 3.14 × 11 × 11
 =379.94cm^2
Area of circle 2= 3.14 × 9 ×9
 =254.64cm^2
Area of a shaded region
 =379.94cm^2 - 254.64cm^2
 =125.60cm^2
 
        
             
        
        
        
Answer:
The only structure or component that a virus and a cell have in common is Nucleic Acid.
Hope this helps. :-)
 
        
             
        
        
        
This is called the Green house effect