give five names of harmful and useful microorganisms?

Useful microorganisms :

1) yeast - which helps in fermentation,making of bread ect.2) rhizobium - which helps in nitrogen fixing3) penicillin - a very useful antibiotic4 )decomposers are usually microbes5) vaccines like that of polio are made by microbes6) many medicines use microbes

Harmful microorganisms :

Vibrio cholerae

Salmonellatyphi

Tinea pedis

Bacillus antrhacis

Clostridium difficile