2- Explain system thinking and how management information system (MIS) solve issues with information silos Facebook entire worldwide organization? (250 words, 20% marks) 3- Explain how MIS enabling business communications at Facebook? (250 words, 20 % marks) 4- Demonstrate how Facebook can add value by using porter's, value chain analysis (350 words, 20 % marks) 5- Explain customer relationship management systems and show how Facebook could use i to understand their customer's needs and discuss whether Facebook has improved having a satisfying social life or undermined people offline relations (400 words, 25 % marks)