In the present review sources, transformation in an atmosphere and drains of gases of which ozone in troposphere is formed are considered. It is shown, that the basic gases - precursors of ozone are monooxid carbon, methane and hydrocarbons of a various nature. Circuits on which ozone is formed of the listed connections are resulted. Estimations of balance of gases in an atmosphere are generalized. Their existential dynamics is briefly described.
ozone; carbon oxide; methane; oxidation; source; effluence