8 kilograms=8000 grams
2.5 kilograms=2500 grams
8000-2500=5500 grams
Colleen bought 5,500 grams more of apples than pears
        
                    
             
        
        
        
The answer is: Impromptu speeches require lots of research.
When you Impromptu, it means that it was not prepared ahead of time. Usually it requires stock information. Research could not be used in impromptu speeches as it is something that is done without preparation. 
        
                    
             
        
        
        
I think <span>rhyme scheme which is </span><span>a repeated regular pattern of rhymes usually found at the end of lines</span>
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provide support in the form of details and relevant facts.