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An experiment was performed on the synthesis of organic substances from a mixture of carbon monoxide and hydrogen on the surface of iron and cobalt, coated with carbide clusters, formed during processing at 573 K in an atmosphere of carbon monoxide. The obtained results indicate that the most likely direction of the formation of organic substances from mixtures of molecular hydrogen and carbon oxides is the thermal hydrogenation (radiation-thermal hydrogenation has a higher speed) at 300-573 K of carbide clusters covering the surface of metals. A significant fraction of organic matter on the Earth is formed during the solidification and cooling of the surface of a “hot” planet from 600 K to 300 K. Initiation by ionizing radiation creates the real condition for the highly endothermic processes of dissociation of water and carbon dioxide molecules, synthesis of new organic molecules and molecular oxygen. On a completely cooling up to 300 K planet this process continued by the vital activity of living organisms and during photosynthesis. The energy of quanta of visible light is much less than the energy of C=O bonds in the CO2 molecule and the dissociation energy of the H-O bond in the H2O molecules. The value of the energy of gamma quanta emitted by the K40 isotope is many times higher than the value of the dissociation energy of the H-O and C=O bonds. The analysis of numerous samples of water, soil, vegetation, livestock products showed the presence of K40 radioisotopes in all samples. The role of gamma radiation of K40 radioisotope should be taken into account at comprehensive analysis of initial stage of photosynthesis. This conclusion is consistent with the revealed facts of increased plant yields on soils with relatively high concentrations of natural radioisotopes, observation of photosynthesis under thick layers of water in the presence of only long-wave infrared rays or in the absence of chlorophyll and oxygen.

The Initiators of the Appearance of Organic Compounds on Earth, the Distribution of Natural Radionuclides in the Plant Mass