metals are unique non renewable resource why
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Metal ores are pieces of rock or mineral that contain metal elements in amounts that make it worthwhile to mine. If it's not economically advantageous, the company would lose money to mine it. There are many kinds of ores, including oxides and sulfides.
Metals are primarily shiny, hard solids that are good conductors of heat and electricity. About 75% of the chemical elements are metals. ... Metals form positively charged ions called cations through loss of electrons. They react with most other elements, but especially nonmetals, such as oxygen and nitrogen. Therefore they are unique.
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