And oil is not only a source of energy but also source of materials



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送交者: HunHunSheng 于 2005-1-04, 12:34:58:

回答: If oil can be easily replaced by alternative energy 由 HunHunSheng 于 2005-1-04, 12:32:54:

plastics, lubricants, fertilizers, cosmetics, etc.
You can use wind, dam, sun to produce electricity but what about raw materials for plastic industry?




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