• Soil Degradation: Soil degradation tests are used to evaluate the breakdown of CO₂based polymers under natural soil conditions. Many CO₂-derived polymers, such as those made from polycarbonates or polyurethanes, have demonstrated promising biodegradation rates in soil. The biodegradation process typically involves microbial activity, which breaks down the polymer chains into simpler molecules. Studies have shown that CO₂-derived polymers degrade faster than traditional plastics, although improvements in polymer structure are still needed to enhance the rate of biodegradation for longer-lived products .