The gas produced by burning fossil fuels is primarily carbon dioxide (CO2). When fossil fuels such as coal, oil, and natural gas are burned for energy, they release this greenhouse gas into the atmosphere. Carbon dioxide contributes significantly to global warming and climate change, as it traps heat in the Earth's atmosphere. Other pollutants, like sulfur dioxide and nitrogen oxides, may also be emitted, but CO2 is the most prominent and concerning due to its long-term impact on the climate. As societies grapple with the need for cleaner energy sources, reducing carbon emissions from fossil fuels has become a crucial goal in combating climate change.