Posted by KRISHNAPRIYA on July 6, 2014, 8:38 p.m.
air pollution can cause many diseases like asthma etc..... the polluted gas not only affect people but also the environment.
Posted by KRISHNAPRIYA on July 6, 2014, 8:38 p.m.air pollution can cause many diseases like asthma etc..... the polluted gas not only affect people but also the environment.