Why do we need levees?

How is the Red Cross different from 'SAMU Social'? What is cross-complaining? How often do f4 tornadoes occur? Who do you report your Landlord to for not having fire alarms installed in your apartment? Can you define the precautions should we take before and after flood? Will there be a tornado storm tonight May 27 2013? What the prevention of flooding? What is the difference between a crisis a disaster and tragedy? Are there evacuation routes for a tornado? Migration of lions? What does the duties of the dhs director of operations coordination include? Why should you go underground in a tornado? What are the bad things about a drought? How do you respond to major flood? What decking is an acceptable repair procedure for a flatbed trailer that has a hole in its wood deck about 2 inches in diameter? What is the definition of the word exigency? How can they prevent chernobyl from happening in the future? What are Insecure power leads precautions? What word means to fill with alarm? What is the synonym for urgency?