Answer:
Along path BC of the Otto cycle, heat transfer Qh into the gas occurs at constant volume, causing a further increase in pressure and temperature. This process corresponds to burning fuel in an internal combustion engine, and takes place so rapidly that the volume is nearly constant.
 
        
             
        
        
        
Nonmetals will readily form covalent bonds with other nonmetals in order to obtain stability, and can form anywhere between one to three covalent bonds with other nonmetals depending on how many valence electrons they posses.
        
             
        
        
        
Radioactive isotopes of an atom aren't as stable as you would think, so the correct answer is: C. Less Stable
(I can verify this because I took the test.)
Hope this helps! Have a wonderfully wonderful day! 
Cheers mate! 
 
        
                    
             
        
        
        
The mosquito would have a higher pitch but quiet and the croaking bullfrog would be a lower pitch but loud.
 
        
             
        
        
        
An LED light bulb is favoured because it is more bright.