Elliptical, because the shape of the galaxy isn’t like the others. It is unique to its own and doesn’t have another to compare to
        
                    
             
        
        
        
I don’t know what you are trying to ask complete my but here are the steps to a scientific investigation i hope this helps you
 
        
        
        
Answer:
speed is increasing.
this is because the graph has a positive slope (due to it going up ), if it were decreasing, the graph would be going down 
 
        
                    
             
        
        
        
Answer:
metre per seconds
Explanation:
because velocity = distance ÷ time
 
        
             
        
        
        
Answer:
Resistivity 
It depends upon cross sectional area and length of material 
Explanation:
The resistance of any material is given by  , here
, here  is the resistivity of material , l is length of material and A is cross sectional area
 is the resistivity of material , l is length of material and A is cross sectional area
So resistivity 
So resistuivity of any material depends upon area of cross section and length of material 
If cross sectional area will be more then resistivity will be more. And is length of the material will be more then resistivity will be less