| PaundsmumSbum | Дата: Понедельник, 2013-11-11, 4:24 AM | Сообщение # 1 |
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Группа: Гости
| Humans are covered with bacteria on all surfaces exposed to the environment around us – our skin, respiratory, and digestive tracks. Roughly 2,000 organisms occupy each square centimeter of these surfaces (roughly 15,000 organisms per square inch). We shed our outer skin layer each http://sand.net76.net two weeks. The skin cells and the oils and other chemical in and on them as well the bacteria hitch-hiking a ride on them end up on the floor, furniture, and even the walls and windows.
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