The term extended metaphor<span> refers to a comparison between two unlike things that continues throughout a series of sentences in a paragraph or lines in a poem. It is often comprised of more than one sentence and sometimes consists of a full paragraph.</span>
        
             
        
        
        
<span>The following are the lines 16–18 (Act 2, scene 1), in which Macbeth tells Banquo that he and his wife couldn’t entertain the king as they would have liked.
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Being unprepared,
Our will became the servant to defect,
Which else should free have wrought
= these lines are ironic because the wife of Baquo liked to entertain the king but she can't because she is not prepared. Her will to entertain may cause a mistake because she was not prepared what should be carefully done.
        
             
        
        
        
A. To inform
The passage is trying to inform you on what happen if you plagarise or what plagiarism is.
 
        
                    
             
        
        
        
It's noun, most probably.
        
             
        
        
        
Answer:
because the atmosphere shields us from radiation from the sun. also, when you put on sunscreen, the risk for skin cancer decreases.