The natural disaster is something that mankind cannot control. One of the problems is that the disaster, which caused many subsequent problems. From this issue, we have ideas.
Natural disasters is something that humans can not control. One of the problems is the Flood which causes various problems. According to several This gives us an idea of the problem.
Natural disasters is what humans can not control. One of the problems is that the flood, which caused many problems. From this problem we have concepts.