nas you know , Gresik Indonesia is a factoy and industry city. So there are many factories. Here most pollutions werw produced by the factoies and also, most high school's . Students here went to the school by motorcycle.
That's why the air in out city consists of cabon monoxcyde in high scale.
Actually, we are still trying to find the best way to solve the pollution problems. At this time, the local goverment have planted many trees, but we thought this is not the effective one. nEdy Purwanto
SMA Negeri 1 Gresik ,Indonesia