Answer: A (colored feathers.)
Explanation: There are many birds with colors that are variously different on the Galapagos.
 
So, Darwin carefully observed the finches of the Galapagos island. What he noticed was that they were similar to the mainland finches, but each island finch has different colored feathers.
 
        
             
        
        
        
Answer:
RNA primer
Explanation:
the DNA polymerase can't synthesize DNA without an 3' ending, the primase enzyme synthesize an RNA primer that brings to the DNA polymerase the 3' spot so she can finally starts the new DNA chain.
 
        
             
        
        
        
Answer:
As the bubble is a spherical entity, the probability of total internal reflection from the watery films is high due to its curvature. As a result, most of the light rays get reflected and therefore the air bubble shines brightly with some sparkling in water
 
        
                    
             
        
        
        
Answer:
They provide structure for the body
Explanation: 
 they take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.