Our nature is are friend, guide, mentor, teacher etc. It has given us all we needed.But the man’s“ NEED IS TURNING INTO GREED” very sadly.Day by day environmental problems are reaching it’s peak point.The biggest of all is pollution.Pollution is causing great destruction to the environment.It has become a great contributor of problems like global warming, increase of traffic in metropolitan cities despite of public transports.So I would say it’s a high time to save your nature, your mother earth.If you don’t it will take it’s revenge in form of earthquakes, floods and cause a great havoc .