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.  Also, various other natural disasters occur.  Planting trees can prevent global warming.  Lately I have been seeing a lot of posts on social media about planting trees.  But the matter has become such that the number of posts about planting trees is more than planting trees.  We all understand that only planting trees can save us from such natural calamities.  But we ask ourselves how many trees we have planted till date.  We only say by mouth that plant trees but there are people in the world who have not planted a single tree in their life.  Therefore, it should be shown in reality, not just in words.  And I think that strong action should be taken by the government about planting trees.