Because at any time, you can find cells that are undergoing mitosis. 
        
             
        
        
        
Answer:
Animals and plants are associated with both divisions and phyla
As kingdom grows the more species are in the classifying group. 
And since there are only a number of kingdom and thousand species, it would account that species changes more rapidly and exponentially grows than kingdoms.
Explanation:
 
        
             
        
        
        
Answer:
I think it is the first one
There is more solute in the roots