Analytical balance is your answer 
        
             
        
        
        
a because the marble changed its position quickly meaning that it was in motion
 
        
                    
             
        
        
        
Answer:
The article is not reflecting current knowledge. 
Explanation:
Rick Potts had explained some thing which has already been established and published several years back by various scientist, researchers, biologist, ecologists and geologist. 
Re publishing something again will not bring laurel to Pott, instead his article would not be considered a suitable article for reference.
Also , if Pott would have published any thing that talks of a way ahead of those previous publication, even then his article could be referred.
 
        
                    
             
        
        
        
<span>A. the same DNA molecule is expressed differently.</span>
        
             
        
        
        
1.All living things are made up of one or more cells.
2.A cell is the most basic structure of organisms.
3.All living cells come from pre-existing cells.