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discovered that the heart pumped blood throughout the body.
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he carried out a famous experiment, he created a vaccine that prevented or curred small pox.
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came up with the fact that evolution has occurred over time.
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he provided irrefutable proof of the occurrence of evolution.
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he was the namer of the Devonian and Cambrian periods.
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Proposed the occurance of past ice ages
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proposed that evolution occurs through natural selection.
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Developed the theory of evolution
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she layed the foundation for professional nursing
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he discovered that 45-50% of amputation patients died from sepsis.
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Came up with the process of pasteurization
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developed Medels Laws of Herdity
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he studied and published his methods of staining, fixing, and photographing bacteria
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founded American Red Cross
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he developed tuberculosis
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he discovered Lysosomes
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he stored blood as plasma to increase storage life
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his vaccine for polio was approved, he studied polio
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his Polio vaccing was used on more than 100 million children in Europe.
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published a pamphlet about over population
