«Африка? Как Африка? Тебя не съели? Ну как там? Страшно было? А правда, что у масаев самые длинные... ноги? А ты змею ел? А слона? Слушай, а почему ты там не остался?» — спрашивают меня мои друзья...
Nature, on its evolutionary path, not only creates complex living structures, perfecting them from unicellular to multicellular, but also seeks to prolong their existence, endowing them with a number of properties at different levels (cellular, organ, organismal, population).
Nature strives for permanence and integrity of living structures, endowing them with the ability to self-reproduce and compensate for damage. Living structures are protected from the external environment by creating envelopes.
Creating membranes is a property of living structures. Human skin is one of them.