The given chart illustrates the level of carbon dioxide emissions from three fossil fuels, namely gas, oil, and coal between 1990 and 2010.
Overall, it can be clearly seen that coal showed the highest figure throughout the whole period, while carbon emissions from gas experienced the lowest figure over the period, except in 1995. Notably, the level of carbon dioxide emissions from three types of fossil fuels, despite some fluctuations, remained stable over the period.
Turning to more a detailed analysis, coal was responsible for the highest number throughout the given period, starting off with just over 300 million tons in 1990, then it experienced a slight decline to just over 250 million tons in 1995, before experiencing a steady increase in 2000 to the same level as it was in 1990, and finally remained stable over the next 10 years.
In contrast, carbon emissions from oil fluctuated between just over 250 million tons and just under 250 million tons between 1990 and 2000, before remaining stable at around 270 million tons until the end of the period. Similarly, carbon dioxide emissions from gas fluctuated over the 10-year period between just over 200 million tons and nearly 270 million tons. After that, the figure for gas remained stable until the end of the period at around 220 million tons.