Answer:
The movement of the replication fork is accomplished by the enzyme helicase, which breaks hydrogen bonds between the paired bases and unwinds the double helix ahead of the advancing DNA polymerase.
 
        
             
        
        
        
It is important because it breaks down the food eaten by the animals into nutrients which are needed for their bodies to function well. Not only it is important to animals but also to humans. <span>Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.</span>
        
             
        
        
        
Answer:
The answer is d
Explanation:
He picked the P plants because they were easy to work with and they grew relatively fast and they also had characteristics that he could manipulate(Brainliest please)
 
        
             
        
        
        
Significance of the birds in the old man
        
             
        
        
        
Firstly light is an external stimuli. in plants - shoots are positively  phototrophic while roots are negatively phototrophic.