Earth's temperature is slowly increasing. The gradual increase in the temperature of the earth is called global warming. An example of a natural disaster caused by global warming is flash flooding. As the temperature of the earth increases, the polar ice melts, resulting in flash floods.
Just for our own safety, we also need to make decision on planting trees, we should not look at the tedious act of doing that, instead we should look into the benefits and advantage of what we stand to gain when there are enough trees planted near our environment in which we lived in, there is not place where there will be abundance of trees and there wont be ventilation cover around the place, same as well were other benefits like fruits in which we stand to gain from trees when they are being productive in tier season.