Science reporter published this article page no 55 the steam engine replaced human andanimal energy and also providedmechanised energy of water and wind. thisincreased agricultural and industrialproduction.inoculation against epidemics and other communicable diseases improvement inmedical facilities and sanitation contributed to a rapid decline in death rates through outthe world. science magazine pdf human population increased more than ten times inthe past 500 hundred years science general knowledge book subscribe now.
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