The relationship between recycling, economics, and energy consumption is demonstrated in the case of aluminum, where
a. new cheap mining technologies and huge newly discovered aluminum deposits have made recycling unprofitableall of the metal recycling industries inn the u. s.
b. went bankrupt by 2009it costs more than ten times as much to produce items from recycled aluminum than from virgin orethe u. s.
c. failure to recycle aluminum has caused energy to be lost in mining new ore
d. 95% of the energy expended to mine and produce items from virgin ore is saved by recycling.