An organism 
because ALL organisms are made up of one or more cells! i hope this helped
        
             
        
        
        
Answer:
Mitosis is the reproduction of tissue cells. While Meiosis is the reproduction of one diploid cell into 4 haploid cells.
Explanation:
 
        
                    
             
        
        
        
The main reason why carbon atoms are so common in living things is because carbon is a very adaptable element in the sense that its electron configuration allows it to bond with many other atoms. 
        
             
        
        
        
Its called pigment chlorophyll