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Because some of the bacteria in the human body fights off diseases, and some cause them. for example, in your antibodies, you have a bacteria that fights certain sickness. Also, a type of bacteria helps you digest food. That's why it's not safe to drink hand sanitizer.

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15y ago

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No. Bacteria is part of our existence. We need bacteria in our daily lives. Bacteria are both harmful and useful to the environment and animals, including humans.

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13y ago
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Bacteria can be good or bad for you, depending on what bacteria it is.

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15y ago
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Q: Are bacteria good or bad
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