Do you know the silent "killers" in water sources?

March 25, 2016 12:35

(Baonghean.vn) - There are many potential dangers in the water sources used today. Although they may not cause direct harm, the accumulation of copper, aluminum, arsenic, etc. every day will silently cause many types of diseases for humans.

Ha Chi - Phan Minh

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Do you know the silent "killers" in water sources?
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