Answer:             None of the given options show polymer made up of H₂C=CH-CN (Acrylonitrile).
Explanation:                   Acrylonitrile (H₂C=CH-CN) which is a monomer on self linkage results in a large chain polymer called as 
Polyacrylonitrile.
                   The structure of Polyacrylonitrile is as follow,
                                             --(H₂C-CHCN-)n--Where n shows the number of Acrylonitrile units joined together in the formation of Polyacrylonitrile. This polymerization reaction can take place by different mechanisms including free radical mechanism, acid catalyzed addition or base catalyzed addition reaction.
The polymerization is shown below,
 
        
             
        
        
        
Answer:
1) They are the same line so they match equally bc they are measuring the same thing just one is more specific than the other
2) Sonar measures all depths at every possible point and maps it including all the gaps in between the 5cm apart the ocean floor is. The difference between the points could be a cliff or a smooth decline.
 
        
                    
             
        
        
        
Ans: Calcium sulfate.
K2SO4 (aq) + Ca(NO3)2 (aq) ⇒ 2KNO3 (aq) + CaSO4 (s)
        
             
        
        
        
Answer:
elliptical galaxy
Explanation
:The combination of the two galaxies then forms what appears to be an elliptical galaxy as the arms begin to disappear. The merger of gasses creates new stars, and the new shape becomes more elliptical, globular, or sometimes irregular.