Bubonic plague was also known as

Explanation:

The Black Death, also known as the Pestilence, the Great Bubonic Plague, the Great Plague or the Plague, or less commonly the Great Mortality or the Black Plague, was the most devastating pandemic recorded in human history, resulting in the deaths of an estimated 75 to 200 million people in Eurasia, peaking in Europe ...

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom