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E.coli can be helpful and harmful at the same time if you know what i mean. E.coli produces a toxin that can be very harmful to people. Also,e.coli is helpful because it help digest your food.
Wiki User
∙ 6y ago
Wiki User
∙ 13y agoHelpful to humans in the right place; your small intestine. Can be very harmful in the wrong place; your drinking water infected with fecal matter.
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