Question

write two harmful and two useful aspects of bacteria

Answer 1

harmful bacteria

1. Coli can also be harmful if food or water is contaminated with it and then eaten.

2. Listeriosis

3. Salmonella

helpful bacteria

1.Rhizobium

2.Streptomyces

3.lactobacillus

Answer 2

here is u r answer

harmful effect
1.they create many infection.
2.they inter in our human body through the air

useful aspect
1.in curd those bacteria are found the help to digestive food.
2.rhizobium