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Which scientific inventions of the twentieth century have led to a reduction in death rates?

Which scientific inventions of the twentieth century have led to a reduction in death rates?

Answers

samuel
i) The grouping of blood into various blood groups by Land Steiner in 1900 facilitates blood transfusions ad the storage of blood banks for later transfusion,

ii) The X - ray by Roengen, German scientists, to view the bone structure and internal organs

iv) human body to facilitate treatment,

iii) Penicillin, an antibiotic by Dr. Alexander flemming in 1928 prolonged lived by treating infections
The Polio vaccine in 1954 by Jonas Edward,

v) Transplant surgery by Dr. Christian Barnard, A South African surgeon in 1967 succeeded in prolonging lives of kidney patients,

vi) Heart valve in 1961 has prolonged lives through replacement of defective valves
lemass answered the question on April 12, 2019 at 05:22

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