Natural Disasters
In the past hundred years,there have heen frequent natural disasters,such as floods,droughts,mud-rock flows,seismic sea waves,earthquakes,windstorms and the stretching of new deserts.The disasters have killed millions upon millions of people,destroyed countless homes,and wiped out numerous pieces of fertile land.
It is urgent for us to do our best to protect it and make it a lovely place suitable to live in,for we have nowhere to go and survive except where we are now.