Coke has more fizz than Pepsi, because Coke has more carbonation in it. Pepsi contains more sugar (2 more tablespoons) than Coke, so it tastes slightly sweeter to many people.
        
                    
             
        
        
        
Answer:
I'm going to say b. gasoline is a chemical and when it combusts, it causes heat (thermal energy) and when the piston rotates because of the thermal expansion, you get mechanical force. 
 
        
             
        
        
        
Answer:
They host three or more distinct ecosystems at different elevations.
Explanation:
I checked it, and its right.