Difference between revisions of "Team:Aix-Marseille/Integrated Practices/history"
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| − | === | + | ===The value of a metal comes from his rarity. Is it still the same nowadays? === |
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| + | ''" | ||
| + | Yes rarity confers the market value to something, the rarer it is the more expensive it is if, of course this thing as a utility for anyone, if there is someone knowing how to use it … There are special characteristic about a metal and if those characteristic give to it a potential role, if people can use it, then this metal will seek for it. Moreover if reserves are not spanned all over the world, then this metal should be precious one. | ||
| + | That is the difference between metals called polymetallic metals (silver, copper, lead) and iron. Iron is widely spread all over the world and is harvested pretty easily as copper, silver, lead, are more concentrated at some points at the surface of the earth and their exploitation can be a bit more complicated. So they are precious because of their rarity and their utility. "'' | ||
===Question 3=== | ===Question 3=== | ||
