need short answers and quick

Question 2 Between the inbound and the outbound transportation costs, which one dominates the other? Question 3 1 Please list two disadvantages of using a centralized distribution system (using a central warehouse to deliver to retailers in different regions directly). Question 4 Why cross-docking can save total inventory cost? 3 Question 5 Why having a central distribution center between the manufacturer and the regional warehouses can save inventory cost? Question 6 Compared to a central distribution center, what functions are missing at a cross-docking site