The answer is a beaker.
~ThePirc
        
                    
             
        
        
        
Explanation:
First do the Last, First, Then middle names of the author(s). Then the title of the article, then magazine. after that the date it was published and finally the page number the information was found on. example: Last, First Middle "title of article" title of magazine 
 
        
             
        
        
        
Answer:
You multiply 0.5 by 20 which will give you 10 your answer is 10
 
        
             
        
        
        
<span>(3) parasite. Parasites are organisms that live on other organisms and cause harm to them.</span>