Bacteria can live in virtually every habitable location on earth. They can be both beneficial and hazardous to other organisms, depending on the strain of bacteria. Microbiology is the study of microscopic organisms, such as bacteria. Aseptic technique must be used in microbiology to avoid contaminating bacteria strains.
http://www.ehow.com/info_10014317_aseptic-technique-important-microbiology.html
