Its the tropopause
hope this helps you
        
             
        
        
        
Answer: Arctic foxes have several adaptations that allow them to survive. Their round, compact bodies minimize surface area that is exposed to the cold air. Their muzzle, ears, and legs are short, which also conserves heat.
Explanation:
 
        
             
        
        
        
Have you tried on the oviaducts im not sure but try it
 
        
                    
             
        
        
        
Protein, the building blocks of proteins are amino acids, different sequences and combinations of these amino acids result in huge numbers of proteins which have a variety of functions.