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TheJerm · Answer 1 · 2018-10-22T15:46:39+0000

The reserve of a fossil fuel could be increased if mining or the extraction techniques of removing fossil fuels improve so that more of fuel can be extracted for more profit.

Sergio Figueiredo · Answer 2 · 2018-10-26T02:59:22+0000

the reserve of a fossil fuel might be increased if mining or extraction techniques improve so that more of fuel can be extracted for a profit

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