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Biology, 28.12.2020 01:00 chhimmidemg
How is coal extracted from the earth? Select the two correct answers. (1 point)
by surface mining
by drilling wells
by hydraulic fracturing
by heating and boiling it
by underground mining
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Answers: 3
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How is coal extracted from the earth? Select the two correct answers. (1 point)
by surface mining
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