1. what are two new methods of extracting copper?
- bioleaching and phytomining
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Other questions in this quiz
2. how is crude oil sparated into different groups of hydrocarbons?
- factional distillation
- fractional smelting
3. when copper ore is heated in a furnace what is this called?
4. what is electrolysis?
- breaking down a substance using electricity
- an electric current
5. what is limestone mainly made of?
- calcium carbonate
- carbon dioxide