What is the positive role of rotting bacteria in human life and economic activity?

Putrefaction bacteria play a vital role in nature. They break down dead organisms very quickly into organic compounds. These bacteria are used for large economic and industrial purposes. For example, for the same destruction of organic waste of both plant and animal origin. These bacteria are also used to produce flammable gas. When organic matter breaks down, a large amount of carbon dioxide and combustible compounds is released. They are also used to make ammonia and other chemicals.