"Need help on oral..." i got cheated to view this thread.
Anyway natural disaster includes forest fires, flash floods, tsunami, landslides etc.
Forest fire: government can proceed on more artificial rain during dry seasons, and it is plain dumb to wait till forest fires occurs only send helicopters to put them off. Besides, campaign to advice rural ppl not to open burning is a good way to prevent forest fire too.
Flash floods: proper planning on drainage system perhaps? Not much can be done though... upholding moral values and do not litter in rivers and longkangs might help, a little.
Tsunami: i don't think there's anyway to stop it. Prevention yes, real-time monitoring on weather changes might help to predict storms and tsunamis.
Landslide: Hmm... engineers should investigate and plan properly before they start to demolish anything. And besides that the government should constantly monitor every construction in this country especially those beside hills.