Question

What was the proof that john snow found that contradicted scientists’ beliefs about miasma theory?.

Answer 1

Answer:

During that time, John Snow, one of the medical scientists in the mid of 19th century, came with the hypothesis that the main cause and spread of the cholera had not been bad air, instead, cholera could be spread in water, food or hand-to-mouth. Snow concluded that cholera was caused by a germ cell not by bad air.

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