Answer:
 37.2 trillion cells
Explanation:
Each cell has their own structure and function. This allows them to duplicate its contents and chromosomes and split into 2 to produce another cell during mitosis
 
        
             
        
        
        
The answer I believe is  c.secondary 
        
                    
             
        
        
        
Answer:
A. Children may begin their struggle with responsibility earlier than age 3 or later than age 5.