The story of life on the Earth can be traced from the time of after about 100 million years after its occurrence. Geological section of the ancient sedimentary rocks of the Earth shows that they were formed with the participation of bacteria. Expanding the basalts, the bacteria are potassium, calcium, zinc, iron, manganese and other substances not found in volcanic gases. The isotopic composition of the accumulating carbon (graphite) indicates that bioorganic origin. Geochemical analysis of rocks suggests on the various manifestations of life. Bacteria alter the isotopic composition of sulfur in sulfates. The high content of phosphates in some places, graphite and sulphate is a sign of the then existing condensations of life characteristic of the later of the biosphere. How life to withstand extreme physical conditions on early Earth? Organisms adapt to high pressure (example - the diversity of life in the ocean depths, where pressures up to 1000 atmospheres). It is more complicated with high fever. Perhaps the bacteria, producing the necessary organic compounds and producing oxygen, reduces the temperature around them. The disappearance of the hydrogen covered about 4 billion years ago, changed the physical and chemical conditions on the Earth that was a disaster for the biosphere. Precipitation formed after this show that biogeochemical processes have almost disappeared. Most organisms of the early biosphere including multicellular organisms were dead. Why did this happen? First, decreased energy intake and decreased temperature on Earth and secondly, the life lost protection against ultraviolet solar radiation. Previously, bacteria could develop over the entire surface of the Earth and after a disaster - only in waters under the ten-layer of water or underground. Life on the Earth, as well as on other planets, originated due to the amazing ability to form giant molecules of carbon with hydrogen, oxygen, nitrogen and other atoms. The next step was to develop a mechanism to facilitate the re-creation of amino acids and other hydrocarbons in the event of damage from overheating - there was a genetic code. Life was formed as a corporate system that performed a variety of biogeochemical functions. The source of energy for the emerging biosphere surrounding it was warm.
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