The answer is D. Identity of an element is determined by the number of protons, also called the Atomic Number. On the periodic table the atomic number is found above the element name. If you take away or add a proton, the element is not the same element anymore
        
             
        
        
        
Neither do I but I’m gonna go ahead and snatch the points
        
             
        
        
        
Answer:
Explanation:
Growth and Maintenance.  
Acts as a Messenger. ...
Provides Structure. ...
Maintains Proper pH. ...
Balances Fluids. ...  
Transports and Stores Nutrients.
 
        
                    
             
        
        
        
for cutting like plants 7e7e6rd