This is the excretory system
        
                    
             
        
        
        
Answer:
 DNA synthesis occurs in the 5′ → 3′ direction only and requires a large suite of specialized enzymes.
Explanation:
 
        
             
        
        
        
Why is your question in Biology section, it should be in mathematics or in physics but that's OK
The answer of A is - 21.6666666666 or 21.7 
The answer of B is - 21.6666666666 or 21.7 
the answer of A and B are equal because speed and velocity is the same thing 
 
        
             
        
        
        
The answer is A. utilize ducts to release their secretions.
Exocrine glands are glands that secrete their products into ducts, they are the counterpart of endocrine glands which release their products into the bloodstream. Typical exocrine glands include: mammary glands, sweat glands, salivary glands, and many glands of the digestive system.
        
                    
             
        
        
        
This is true both vitamin c and zinc are important immunity boosters check out zycam or emergenC products and both these elements are in them to shorten colds