Answer:
If they didn't differentiate then the stem cells would stay the same type and if it somehow kept multiplying then they would just be a massive blob with no actual form or way of functioning.
 
        
             
        
        
        
Hi? I guess
Is this free points?
        
                    
             
        
        
        
D. Decrease in the amount of carbon dioxide in the air
Explanation:
i hope this is right have a nice day God bless u