Biodegradable bags are eco-friendly alternatives to plastic bags that can decompose naturally by microorganisms. They can be made from plant-based materials like corn starch, potato starch, or cellulose, or from synthetic polymers with additives Biodegradable bags can reduce landfill waste, greenhouse gas emissions, and plastic pollution, but they need proper disposal conditions. 

Some biodegradable bags are compostable, meaning they can turn into nutrient-rich soil in a compost bin or facility, while others are not .