Crude oil is removed from the earth by extracting it is then separated into different components by heating and boiling. After this step, gasoline is processed and delivered to central terminals via underground pipes.
Crude oil is removed from the earth by _____(barges, drifting, mining, extracting, underground pipes, separated) it is then ______ into different components by heating and boiling. After this step, gasoline is processed and delivered to central terminals via _______
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