I believe the inability to make saliva would affect digestion drastically. The first phase in the process of digestion comes with saliva - it breaks down some substances in your mouth, because it contains amylase which helps during this process. If it weren't for saliva, you probably wouldn't even be able to swallow food - and even if you did, it would be almost impossible to break it down in your body.
        
             
        
        
        
I believe the answer would be "Top Predators"
        
             
        
        
        
Answer:
Repetitive DNA segments: transposable elements.
I hope it helps.
 
        
             
        
        
        
hope this helps :):):):):):):):):):)