A scientist might work in a laboratory, out in nature, at a special office, as a professor, as a writer or journalist, and more! To answer puzzling questions, scientists might do everything from performing tests and collecting surveys to brainstorming and daydreaming! Scientists use all kinds of different tools for their jobs: Computers, telescopes, microscopes, rulers, thermometers, barometers, scales, beakers and test tubes, and much more!
The bacteria that causes the bubonic plague is called Yersinia pestis. This bacteria also causes the other two forms of plague: septicemic plague and pneumonic plague (see Types of Plague).
Scanning electron micrograph of Yersinia pestis, which causes bubonic plague, on proventricular spines of a Xenopsylla cheopis flea. NIAID. Yersinia pestis (sometimes spelled Yersina) is the name of the bacteria that causes the bubonic plague.. pestis is primarily the cause of disease in a wide variety of rodents, including marmots, ground squirrels, gerbils, and prairie dogs, and, most famously, rats, specifically the black rat (Rattus rattus) (and almost certainly not the brown rat (R. norvegicus), despite what you might have heard).