the answer is A because restriction enzymes function in cutting strand of DNA at specufic sites 
 
        
             
        
        
        
Would it be predators? Because predators can catch weaker older deer easier than younger healthier ones.
        
             
        
        
        
Answer:
A. Hemodialysis
Explanation:
Hemodialysis is the method or process of using a dialysis machine (a special machine) to clean the blood. 
This is done by doing a minor surgery on the patient to get the blood into the dialyzer.
This dialysis machine does the work a healthy kidney would do.
 
        
             
        
        
        
I believe that it is the old growth not sure which one but between B and D I would go with B but I am not sure (hope I helped in some way )