1 - Name three functions of warehouses and explain it, which are four advantages of private warehouses? 2 - Name five types of packages used in ocean freight shipments, and What is the main problem with using wood packaging when shipping items internationally? 3 - Name at least three different types of public warehouses, and explain which each of them is? 4 - What is the difference between a revocable and irrevocable letter of credit? Explain