A realistic assessment of environmentally friendly polymer technology and clarification of the technical differences between materials that are biodegradable and those produced from renewable resources.A realistic assessment of environmentally friendly polymer technology and clarification of the technical differences between materials that are biodegradable and those produced from renewable resources.A realistic assessment of environmentally friendly polymer technology and clarification of the technical differences between materials that are biodegradable and those produced from renewable resources.A realistic assessment of environmentally friendly polymer technology and clarification of the technical differences between materials that are biodegradable and those produced from renewable resources.A realistic assessment of environmentally friendly polymer technology and clarification of the technical differences between materials that are biodegradable and those produced from renewable resources.