Question

What is harmful bacteria ?​

Answer 1

Pathogenic bacteria are bacteria that can cause disease. Most species of bacteria are harmless and are often beneficial but others can cause infectious diseases. The number of these pathogenic species in humans is estimated to be fewer than a hundred.

Answer 2

Answer:

Pathogenic bacteria are bacteria that can cause disease. Most species of bacteria are harmless and are often beneficial but others can cause infectious diseases. The number of these pathogenic species in humans is estimated to be fewer than a hundred.