Question

the first person who proved experimentally that boinling kills micro organisms
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Answer 1

Lazzaro Spallanzani

Figure: Antoni van Leeuwenhoek: A drawing of Antoni van Leeuwenhoek, one of the first scientists to use a microscope and identify microbes. Lazzaro Spallanzani (1729–1799) found that boiling broth would sterilize it and kill any microorganisms in it.