MIS 4 questions urgent needed in 2 hours

Question 1: Define a supply chain and identify each of its components. Discuss how supply chain management systems help reduce the bullwhip effect and how they provide value for a business.

Question 2: Define customer relationship management and explain why customer relationships are so important today. Discuss how partner relationship management (PRM) and employee relationship management (ERM) are related to customer relationship management (CRM)?

Question 3: List name and describe the principal e-commerce business models and the e-commerce revenue models.

Question 4: Explain how does the Internet change consumer and supplier relationships? Discuss how have social technologies changed e-commerce?