Question

What is the common belief about bacteria ? Are all bacteria harmful?​

Answer 1

the common belief about bacteria is that it is always harmful and causes bacterial infections in our body, whereas this is not true. not all bacteria are harmful, example: E. Coli in our intestines helps in digestion of our food, it gives us vitamin E and in turn gets food for its own survival. in this way it has a symbiotic relationship with us, and thus it does not harm us.

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