Sanitary Facilities
The first American to travel into space, Alan Shepard, had been lying on his back in the Mercury capsule he had named Friendship 7 for over 4 hours.
A mock-up of a space station ...
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Sanitation
Sanitation, or the use of measures that prevent disease and promote health, was practiced by civilization long before the origins of illness were understood. Underground systems designed to...
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Sanitation
Sanitation can be defined as the measures, methods, and activities that prevent the transmission of diseases and ensure public health. Specifically, "sanitation" refers to t...
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Sanitary Facilities
Sanitation
Sanitation
