Microbiology is the study of microscopic organisms such as algae, bacteria, moulds, protozoans, viruses, and yeasts. All these organisms are collectively called microbes. They include algae, bacteria, moulds, protozoans, viruses, and yeasts.
Fields of microbiology includes study of many diverse subjects such as relationships between microbes and man, animals, and plants; the role of microorganisms in human and animal diseases and seek ways to prevent and cure these diseases; plant diseases and the role of microorganisms in soil fertility, and spoilage of farm products by microorganisms; and use of microorganisms to produce such products as alcoholic beverages and antibiotics, citric acid. All these subjects provide insights to the environmental scientist to understand the process by which the nature and quality of our environment is shaped. Knowledge of these subjects also helps us to develop ways and means to preserve and protect the environment. For example, microbes play an important part in sewage treatment and pollution control.
The fields of microbiology is not only aimed on the study of the relationaship between microbes and and other hosts..... it's also for the study of the relationship between microbes and microbes...effect of biotic and abiotic factors on microbes and many others behaviours of microbes which leads many types of benificial and non- benificial prospects in environment.