Material and energy flows must be optimised so that natural resources can be maintained in the long run
One of the main goals of sustainable development is to lessen the environmental impact of economic and other human activities. The economy's performance must be maintained or improved while reducing material consumption. Raw material consumption (RMC), also called material footprint, considers the total mass of materials that a country consumes every year in raw material equivalents. Material intensity is calculated by dividing the RMC by the real GDP at the previous year's prices.