Biodegradable: Biodegradation is the naturally-occurring breakdown of materials by microorganisms such as bacteria and fungi or other biological activity. These microorganisms eat away at the biodegradable material leaving behind only natural constituents of biomass, carbon dioxide, and water. Subsequently, these natural materials can be safely re-absorbed back into the earth.
Compostable: Composting is a human-driven process in which biodegradation occurs under a specific set of circumstances. An ideal composting environment is subject to certain heat or moisture conditions. Decomposition of such materials results in the addition of rich nutrients to the soil and can be an effective form of fertilizer for home gardeners and farmers.
Degradable: Degradation (geology), lowering of a fluvial surface by erosion Degradation (telecommunications), of an electronic signal Biodegradation. Products are oil-based with an additive included to trigger the process of degradation – They are not biodegradable or compostable. Degradable materials break down via a chemical reaction and the end results of degradation do nothing more than break down the oil components into smaller fragments leaving behind the same amount of plastic dust. Degradable bags require specific UV conditions in order to break down and will remain intact when composted or buried in the landfill.