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Do you know that water bottle which you drink by touching your mouth, is being polluted?
Without realizing it, water bottle as well a water in the bottle are being polluted through your hands ans mouth.
Lots of micoorganisms which is bacteria, are living in our mouth and they can breed quickly in the water bottle which we were touching our mouth more than once.
Daegu, South Korea
so hyeon yun,
ji hyun byun,