Question

write some way in whichicroorganism are useful and harmful for us​

Answer 1

Hello friend I think algea and fungai

Answer 2

Microorganisms are useful in many ways such as Lactobacillus is a type of bacteria who helps in ti make curd,fungi helps in to make antibiotics etc and harmful organisms are salmonella typhi which causes typhoid ,due to trichophyton rubrum athletes foot are caused .This is my answer.