Question

give example of useful bacteria and harmful bacteris

Answer 1

Useful bacteria -- i) Lactobacillus , ii ) Breve , iii) Salivarius 

Harmful bacteria --i) Yersenia Pestis , ii) helicobacter pylori , iii) Bacillus anthracis .

Answer 2

Hy friend here is your answer
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Question-: Give example of useful bacteria and harmful bacteria??

Answer-: Useful bacteria-: Rhizobium, Bacteroides, viridans, Escherichia.

Harmful bacteria-: Staphylococci, pseudomonas.

I don't know more.

Hope it may help you.

@Soma❤️