Question

What did Robert Koch contribute to the world

Answer 1

Building on Pasteur's work on germ theory ,Koch used experiments to prove that the bacterium bacillus anthracxs was the cause of anthrax.
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Answer 2

Robert Koch developed a way to make it easier to observe bacteria. This was the known as the Petri dish. He also found the causes to various diseases such as tuberculosis, cholera, and typhus. Finally, Robert Koch made it easier to see bacteria under a microscope by staining it.