But, in Comedy of Character, the Individual is self-determined; his situation, in its essential points, is the consequence of his own action  of his own folly or weakness; he is not plunged into it from without, by fate or by accident. In this sphere the Individual will find a realm of freedom.
CO2 - the major cause of global warming. Global warming is caused by the emission of greenhouse gases . 72% of the totally emitted greenhouse gases is carbon dioxide (CO2), 18% Methane and 9% Nitrous oxide (NOx). Carbon dioxide emissions therefore are the most important cause of global warming. CO2 is inevitably created by burning fuels like e.g. oil, natural gas, diesel, organic-diesel, petrol, organic-petrol, ethanol.
Carbon dioxide is abundant in volcanic gases, but not enough to significantly contribute to the greenhouse effect. Volcanoes contribute about 110 million tons of carbon dioxide per year while man's activities contribute about 10 billion tons per year.