An Activity is launched by using a(n) ________ that indicates an action to be performed and the data on which to perform that action.

A(n) _______________ occurs when any two elements are out of order.

A. pivot B. partition C. swap D. inversion

Answer the following questions about object-oriented programming, using this chapter and explorations on the Web.

1. What is the difference between an instance and a class? 2. How are functions and methods different? 3. How is object-oriented programming different from procedural programming? 4. What is polymorphism? 5. What is encapsulation? 6. What is aggregation? 7. What is a constructor? 8. How did biological cells influence the development of the idea of objects?