Natural pollution:Is due to the rain, snow melt, flooding, wind storm ... or the active product living of creatures, including the corpses of them.Trees, creatures die, they are microorganisms that decompose the organic matter. The part will infuse into the ground, then eat deeply into groundwater, polluting. or by underground water line into the line.Floods could make the country lose the clean, stirring up the mess in the sewers, carrying many of the toxic waste from the garbage place, and according to the types of chemicals stored previously.Flood water can be contaminated by chemicals used in agriculture, industry or due to the toxic agent in the waste area. Workers clean up the engineering school nearby flooded may be harm by chemical pollution of water.Water pollution due to natural factors (volcanoes, erosion, storms, floods, ...) can be very serious, but not often, and is not the main cause of global water quality degradation.
đang được dịch, vui lòng đợi..
