How does the reaction in the furnace cause environmental problems?

The reaction in a furnace, particularly in the combustion of fossil fuels, produces greenhouse gases like carbon dioxide and pollutants such as sulfur dioxide and nitrogen oxides. These emissions contribute to climate change, air pollution, and respiratory health issues in humans. Additionally, the release of particulate matter can contaminate surrounding ecosystems, leading to further environmental degradation. Consequently, the overall impact of furnace reactions poses significant risks to both public health and the environment.