log-in |
Earth physicochemical conditions limit the development of life.
Firstly, it is sufficient amount of carbon dioxide and oxygen.
It was established that the Himalayan zone of distribution of green vegetation is limited to a height of 6200 m, where the partial pressure of carbon dioxide is twice lower than at the sea surface. However, higher life finally stops - there are some common types of spiders and insects. They eat pollen and other organic remains, recorded by the wind.
Secondly, it is enough water (and necessarily - in the liquid phase "), which could provide the normal course of life processes. At the Earth's surface areas, where life would be limited by this factor, are extremely rare.
Third, the favorable thermal conditions, are excluded as too high temperatures (causing coagulation of protein) and too low (the enzymes stop working). Champions of survival are prokaryotes. Some of their species live on the snow, while others - in the hot springs at temperatures above 100 °.
Fourth, is the presence of "living wage" of mineral elements - a factor that greatly limits the development of life in large areas of the oceans, but rarely reduces it to zero.
Fifth, the increased salinity of the water environment, exceeding the concentration of salts in seawater is about 10 times. |
Common Facts:
Artificial containers, which produces evaporation of brines, sterile.
Deprived of life, and groundwater with salt concentration over 270 g / liter.
The above factors limit the development of life only at very small areas of the globe.
|