Why did he??????
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Answer:
Organ
Explanation:
Cell, tissue, organ, organ system, organism
 
        
             
        
        
        
Proteins are made from Amino acids and, proteins are made by the ribosomes in a cell. <span />
        
                    
             
        
        
        
Astronomers use light years to measure distances in space because space is so massive and distances so far that conventional numbering is inadequate and unmanageable. One light year is a distance measurement equivalent to six trillion miles.