I advice you to list some precautions during an earthquake or tsunami then only my answer will be helpful to you.
Make your conclusion like this -:
After going through a long study about earthquakes & tsunami's we arrive at a conclusion that earthquakes & tsunami's are natural disasters which can happen at any time at any place. It's not in human hands to make them happen or to not make them happen. After all if there is an earthquake or tsunami we should not fear & be courageous & be aware of the precautions listed above & also take them during the disasters.