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1 الاسباب ;, groundwater pollution, indoor air pollution, mining, ****l smelting and processing, radioactive waste ...

And uranium mines, sewage treatment, air quality in cities, the recycling of car batteries, is the most serious sources of pollution in the world according to a recent report by the Institute of Environmental Research of the Blacksmith in the United States and the Organization of Green Cross in Switzerland entitled

1 - exploration for gold using elementary
Manual exploration for gold, which comes more than a quarter of world production, is one of the leading sources of mercury releases to the environment in the relevant participating This could Bmmeltqy Arab engineers: this post Related Bmmeltqy Arab Engineers:

2 - surface water contaminated
Major pollutants in aquatic systems are bacteria and viruses found in human waste, heavy ****ls, and organic chemicals that result from industrial waste. And ingestion of pathogens by drinking or eating food prepared using contaminated water is the most common way the disease.

2 - surface water contaminated
Major pollutants in aquatic systems are bacteria and viruses found in human waste, heavy ****ls, and organic chemicals that result from industrial waste. And ingestion of pathogens by drinking or eating food prepared using contaminated water is the most common way the disease. To participate Aalmhzh Related Bmmeltqy Arab Engineers: http:-T