Question

write short notes is useful and harmful bacteria​

Answer 1

Answer:

Usefull bacteria

Explanation:

Bacteria helps us in many ways

1) They help in cleaning the environment

2) They are used in food

3) They are used in fields of making medicine

Harmfull bateria

Answer 2

Answer:

useful bacteria is Ex.lactobacillus which give curd to us

harmful bacteria is Ex.E.coli can also be harmful if food or water is contaminated with it and then eaten