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Nats 1670 Final Exam Questions and Answers Graded A+
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Nats 1670 Final Exam Questions and Answers Graded A+ What was the life expectancy in the early 1900's? -ANS>> Under the age of 50, with a 25% child mortality rate. When was the first vaccine created? -ANS>> 1880 ____________ _____________ can reduce life expectancy dramatica...
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