residual waste– (waste) waste that remains after the separation of recyclable materials (includinggreen waste).resource flow- the totality of changes in multiple resource stocks, or at least any pair of them, over aspecified period of timeresource intensity– ratio of resource consumption relative to its economic or physical output; forexample, litres of water used per dollar spent, or litres of water used per tonne of aluminiumproduced. At the national level, energy intensity is the ratio of total primary energy consumption ofthe country to either the gross domestic product, or the physical output (total goods produced).resource productivity– the output obtained for a given resource input.resource recovery– (waste) the process of obtaining matter or energy from discarded materials.resource stock- the total amount of a resource often related to resource flow (the amount ofresources harvested or used per unit of time). To harvest a resource stock sustainably, the harvestmust not exceed the net production of the stock. Stocks are measured in mass, volume, or energy andflows in mass, volume, or energy per unit of time.
2/26/2016Glossary of environmental science - Wikipedia, the free encyclopedia24/31respiration– (biology) uptake by a living organism of oxygen from the air (or water) which is thenused to oxidise organic matter or food. The outputs of this oxidation are usually CO2and H2O; themetabolic process by which organisms meet their internal energy needs and release CO2.retail therapy– using shopping to obtain a ‘lift’ to make up for other things lacking in our lives.retrofit- to replace existing items with updated items.reuse- the second pillar of the waste hierarchy - recovering value from a discarded resource withoutreprocessing or remanufacture e.g.clothes sold though opportunity shops strictly represent a form ofre-use, rather than recyclingrisk– the probability of a (negative) occurrence.Ssalinisation– (ecology) the process by which land becomes salt-affected.salinity– (ecology) salt in water and soils, generally in the context of human activity such as clearingand planting for annual crops rather than perennial trees and shrubs. Can make soils infertile.scale– the physical dimensions, in either space or time, of phenomena or events; cf. a level whichmay or may not have a scale.sectors– (economics) economic groupings used to generalise patterns of expenditure and use.sediment– (ecology) soil or other particles that settle to the bottom of water bodies.self-organisation– the process by which systems use energy to develop structure and organisation.sentinel indicator– (ecology) an indicator that captures the essence of the process of changeaffecting a broad area of interest and which is also easily communicated.