Metal:
  Metal is produced either from scrap metal or malm. When producing from scrap, metals will be melted in suitable mixtures. But when producing from metal malm the process is much longer and it will take much more energy producing metals.
   Because metal is nonrecurring and the production process uses a lot of energy it is very important that scrap metals will be reused, But for example monitors have so many different metal parts that they are difficult to recycle. In the future products should be made more simple so they could be recycled more easy.