Ring species.
When there are neighbouring populations that can interbreed with each other while only two of those populations cannot breed between them, we are standing before a ring species. In the case of Larus gulls what is observed is that several of these species can interbreed, but it comes to two of them that are incompatible - they are probably to<span> distantly related to interbreed. It is considered, that this species may be connected to each other in a line of derivation and is both ends on that line that are incompatible.</span>
        
             
        
        
        
Explanation:
Cellular Metabolism
The living cells of every organism constantly use energy to survive and grow. Cells break down complex carbohydrates into simple sugars that the cell can use for energy. Muscle cells may consumer energy to build long muscle proteins from small amino acid molecules.
 
        
             
        
        
        
Answer:
The effect of protein disulfide isomerase on insulin signifies that the active conformation of insulin is not the most thermodynamically favored form. The main reason behind this is that the protein disulfide isomerase seems to decline the free energy, that is, it makes them more steady form predominant.  
In the case of insulin, the prevalence of the stable form results in its inactivation. Thus, it signifies that the active form is not thermodynamically stable.  
 
        
             
        
        
        
The answer for this is legumes.
        
                    
             
        
        
        
Answer - B
Reason - Since the area is in the tropics there will be time to time heavy precipitation, which over time the decomposed nutrients will get washed down into a run off and depleted.