Air pollution in big cities is mainly caused by burning fuel in vehicles engine. Efforts are made to minimize hydrocarbon fuel consumption both by modifying cars engine as well as changing the source of energy to clean resources. Other aspect...

of water level.

\tGroundwater pollution and problem in water supply appear to be some of the most important reasons inhibiting the sustainable economic development of the city. The quality of groundwater deteriorated sharply during recent years...

and Cd concentrations in the soil, during nearly short period of industrialization. It should be consider to make necessary decision to prevent more pollution....