The biodegradation process of paper straws involves the breakdown of the paper fibers by microorganisms in the environment, such as bacteria and fungi. This process occurs naturally and can take several weeks to several months, depending on the conditions. During biodegradation, the paper straw breaks down into smaller particles, eventually decomposing into water, carbon dioxide, and other natural substances, leaving no harmful residue behind. This makes paper straws a more environmentally friendly alternative to traditional plastic straws.