Ribose, phosphate groups, and adenine.
        
                    
             
        
        
        
During DNA replication, the two strands separate as the hydrogen bonds connecting the parent strands are broken by an enzyme called helicase. In the DNA molecule (double strand) complementary bases are joined by hydrogen bonds; that is; Adenine paired to thyamine and guanine to cytosine; during replication the enzyme helicase separates the double helix by breaking the hydrogen bonds between the complementary bases. 
        
             
        
        
        
Answer:
Yellow
Explanation:
Yellow carrots: highest in lutein, may also contain zeaxanthin.This is the result of certain carotenoid pigments present in the root.
 
        
             
        
        
        
This is such a vague question. Are you asking what it is or how to trace the process? 
Water treatment<span> is any process that makes </span>water<span> more acceptable for a specific end-use. The end use may be drinking, industrial </span>water<span> supply, irrigation, river flow maintenance, </span>water<span> recreation or many other uses including being safely returned to the environment.</span>