Answer & explanation:
To balance a chemical equation, we must make sure that there are equal amounts of each element in the equation on either side. 
To balance an equation step-by-step we first start by counting the amount of each element on each side. If they aren't equal, we must make them amounts equal on either side. 
After you make sure all the elements are balanced, the net charge on both sides must also be equal.
 
        
             
        
        
        
Answer:
D. As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.
Explanation:
I hope this helps. :)