Question 1: Differentiate between the following items Efficiency and effectives support your answer with clear example. Administration and management support your answer with clear example. Push and pull supply chain support your answer with clear example. Sales and marketing support your answer with clear example. Question 2: explain how Wal-Mart used information systems to achieve its competitive advantage. In addition short report about Wal-Mart in general. Question 3: explain how AMAZON used information systems to adopt new business models. In addition short report about AMAZON in general. Question 4: give one example about success story for one organization that used information systems to achieve competitive advantage through competing on global scale. Question 5: define the business models, list and discuss 7 examples of the business models. And how these business .models help the firms to compete in the marketplace