Paper is a biodegradable material. It produces gas whose emission is environmentally objectionable. Which is that gas?

Explanation

When paper biodegrades, especially in the presence of oxygen, the primary gas emitted is carbon dioxide (CO2), due to the aerobic decomposition of its cellulose content. This process involves microorganisms breaking down the organic matter, releasing CO2 as a byproduct. Other gases like sulfur dioxide (SO2), methane (CH4), and nitrogen dioxide (NO2) are not typically emitted during the biodegradation of paper. SO2 is linked to burning sulfur-containing materials, CH4 is released in anaerobic conditions like landfills, and NO2 results from high-temperature combustion processes of fossil fuels.