The density decreases because you are coming closer to the atmosphere and away from the center of the earth
        
             
        
        
        
Its is c<span>ytoplasm to that answer</span>
        
             
        
        
        
E<span>ach atomic number identifies a specific element, but not the "Ion/Charged particle"
Hope this helps!</span>
        
                    
             
        
        
        
 
 The one that is loosing electron is oxidation process and the one that is gaining electron is reduction.
b) Reduction reaction occur at cathode while oxidation reaction occur at Anode.
Explanation:
The main difference between the reduction and oxidation process is based on gaining and loosing of electron.
Reduction and oxidation both occur simultaneously. one is loosing electron and other is gaining. The one that is loosing electron is oxidation process and the one that is gaining electron is reduction.
B) Reduction reaction occur at cathode while oxidation reaction occur at Anode