A, an object in motion stays in motion unless acted upon by an outside force.
        
                    
             
        
        
        
I googled it and it said it is estimated that 5 percent of human DNA encodes protein. Not sure if it is correct or not.
        
                    
             
        
        
        
Ecology.is the best answer for this question
        
             
        
        
        
<span>The answer should be B.	The results of a previous experiment are presented as an introduction to a new experiment.
Material that used for </span>presentation of background research should have a credible information. A<span>mazing new drug is described in a television commercial mostly false and it is not backed up by scientific study. Rumor from </span><span>second-hand accounts definitely not credible. A newspaper is not a scientific study and could give false information.</span>