1. Supply chains have become more efficient and effective because of improvements in technology and management practices. In spite of these improvements, potential disruptions in the supply chain can cause severe problems for both companies and customers. Why is that the case? 2. Energy, environmental, and safety issues have become increasingly important in supply chain management. Briefly discuss why this is true and how these issues impact SCM. 3. Identify the major components of the Supply Chain Council SCOR Model. Briefly describe each of the six SCOR processes. 4. What are key performance indicators (KPIs) and how are they used in supply chain management? 5. Briefly describe any three tools used to support planning and collaboration in the supply chain. How would not having these tools impact supply chain performance