Pollution-"A Killer Cloud" In this developing nation,there is increase in pollution,and the pollution is the major problem of most of the breathing problems such as asthma,heart disease etc. Pollution increases the toxic gases such as carbon monoxide,CFC's etc. Chloro Floro Carbon gas is poisonous as it reduces the ozone layer,due to which deadly gases entire into Earth surface & increases atmospheric temperature. So,Pollution should be reduce.