Answer:
There was no change in the number of days with poor flower availability
Explanation:
When replicating a study, the researcher develops the exact same study (experiment/treatment) in different places (experimental unit). In this case, as the researcher replicates the study in the Appalachian Mountains and gets similar results, that means that there was no change in the number of days with poor flower availability. 
 
        
             
        
        
        
<span>A. The African plate is breaking apart to form two separate plates.</span>
        
             
        
        
        
Just say we have a big amount of tryptophan in the sense that it exceeds, tryptophan would act as a co-repressor which prevents synthesis of more enzymes for its production
Hope this helps :)
        
             
        
        
        
Answer:
A. 2 cells are made from one cell
 
        
             
        
        
        
Uh the answer is B. Humans