Are All Bacteria Harmful?

Speaking of bacteria you might automatical-ly hate them ,thinking they are all harmful.It is true that bacteria make trouble every- where. They can turn fresh vegetables rotten and if food is contaminated you will get dysentery. However, there are quite a num- ber of bacteria that are helpful. For instance, some bacteria can help to make vinegar and monosodium glutamate. Even m our large intestine there are many helpful bacteria, which work there endlessly to produce vit- amins for us. There are others, which can turn animal bodies, stools, plant leaves and branches into nutrients needed by plants. If there were not bacteria, what would the world look like? A mess. Therefore, it is not true that all bacteria are harmful.