Opening mining galleries that promote the infiltration of salt, potash, for example in the field, the toxic gases dissolve in rainwater and the potential for accidental rupture of pipelines, processing industries; water discharges of heavy metals, cadmium, lead, arsenic and synthetic organic compounds, the poor storage of chemicals; exhaust gases and oils in the road transport, the hot water thermal pollution from nuclear power, the courage of waste at sea of \u200b\u200bships ...
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