Question

What is difference betweeen harmful bacteria and useful bacteria

Answer 1

Answer:

Actually, most bacteria are “good.” Comparatively speaking, there are only a handful of “bad” bacteria out there. Of the total bacteria in our bodies, a healthy balance is 85% good bacteria and 15% bad bacteria. ... Many of these bacteria reside in our gut, helping our body break down food and absorb nutrients.

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Answer 2

Answer:

harmful bacteria is the one which acts as parasite on you and cause ill effects where as good bacteria I mean symbiotic bacteria stays in your gut and helps in preparing of nonessential amino acids