naveedkhan

there have both positive and negative importance of bacteria. They play very important role in the life of human beings. Their importance is given below: Ecological Importance Bacteria are ecologically very important.  They show many adaptations. So they are present everywhere. They decompose organic matter and play an important role in the completion of cycles of nitrogen, phosphorus, sulfur and carbon. Economic Importance Bacteria show following beneficial and harmful effects: Bacteria are used in number of industries like food, drugs (production of antibiotics and vaccines) and biotechnology. They are responsible for the spoilage of food and vegetables. Many plant pathogens adversely affect the agriculture the agriculture industry. Bacteria are common pathogen of humans. There are 200 species of bacteria which cause disease in man. Many bacteria normally live in the bodies of man and other animals and perform important functions.