Hello there,
All compounds of carbon are made by <span>ionic bonding.
I Hope this helps.
~Jurgen</span>
        
                    
             
        
        
        
Answer:
Brother/sister It's Layer 'C' 
Explanation:
HOPE IT HELPZZ! 
 
        
             
        
        
        
1) is C because the arrows are pointing in so that means to squeeze 
3) is A as the picture shows the dropper
        
             
        
        
        
Answer:
I think its carbon because of all the chemicals being used in that air.