In 1854, London physician Dr. John Snow mapped the spatial relationship between deaths from the waterborne disease cholera and the locations of water pumps which brought in water directly from tunnels connected to the River Thames. From Snow's research it was determined that a public water pump had been contaminated by sewage.

for e2020. the answer would be some directions from the mountain range so we can find mt. whitney. to locate which direction is north, you should use a   compass. this would not only find mt. whitney, but also becuase of this long paragraph you would get points because it's not like anyone actually reads your work becuase once they read the first sentence it sounds dumb enough to not read becuase i'm not good at answering this but the answer is compass for your benefit.

for e2020 ; -;