No, there is much confusion surrounding the term “biodegradation.” Different organizations that support different types of biodegradable plastics do represent composting as the only form of biodegradation. ASTM defines biodegradable plastic as “a degradable plastic in which the degradation results from the action of naturally-occurring microorganisms such as bacteria, fungi, and algae.” These types of organisms exist in composting environments, but also exist in different environments, as well. “Composting” is not the definitive process of biodegradation.