The correct answer is cell cycle
        
             
        
        
        
Making rough estimate of physical quantities is useful because it allow us to have an idea of how big or small a quantity is, it gives us the near result of the real quantity a matter contains. The approximate quantity obtained will give us information about the size of the quantity.
        
             
        
        
        
Answer:
A. It Shows that organisms have changed over time.
Explanation: