Steel should be renewable resources, right? Is it possible to produce a ton of scrap iron (that is to say, the same amount of scrap metal can be used in the same amount)?
It should be noted that such as steel, electricity and so on are artificial products, people can control his update, to be fast, stop to stop. They can not be classified according to the update, there is no renewable and non renewable problems.Waste can be recycled, but they are not natural resources - in fact, should be a "two resources"
The non renewable refers to the renewal time is too long, with the gradual reduction of human resources, such as iron ore, coal, oil, etc..
Steel is not renewable resources.Only natural resources can be divided into two kinds of renewable and non renewable. A relatively short regeneration time of renewable biological resources (such as "wild fire, in spring"), water resources are renewable resources; another is that people use it will not affect the number of - such as farmland, geothermal resources, climate.
