Answer:
<h3>sand is a substance: because is a mixture of two or more material which are not completely comband tougher but are phsicla comband tougher</h3>
 
        
             
        
        
        
Eu(dbm)3(Phen)/ACM17904835 can be provided in Alfa Chemistry. We are dedicated to provide our customers the best products and services.
http://www.alfa-chemistry.com/eu-dbm-3-phen-cas-17904-83-5-item-282850.htm
 
        
                    
             
        
        
        
They form an organ
Have a nice day
        
             
        
        
        
Answer:
The two types of cells that never go through cell division once fully formed are nerve cells and muscle cells.
Explanation: 
The nerve cells and the muscle cells not undergo cell division after formation, because they can never re grow or cannot be repaired once they are mature. We should take good care of it once they are matured. They just under division from being baby to teenagers after that they stop undergoing cell division. This is true for both elephants as well as human beings. This thing is also applicable in case of bones. 
 
        
             
        
        
        
I think that they both measure energy