Answer:
binary computer natural language
A light bulb is usually powered by a wire producing electricity. The energy can also come from wind turbines or solar panels.
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Microsoft word is an example of a graphical word program
Answer:
within the Book class but needs to also be outside of any methods.
Explanation:
If Ben is creating an entire Book class then the instance variable needs to be within the Book class but needs to also be outside of any methods. If Ben places the variable inside a method it can only be used by that method and therefore becomes an instance variable of that method and not the class. By creating it inside the class and outside the methods it can be used every single time a Book object is created. Therefore, creating an instance variable of serialNumber every time.
