AP Environmental Sciencemediummcq1 pt
Fracking (hydraulic fracturing) extracts natural gas by
A.pumping high-pressure fluid to crack shale
B.drilling into liquid oil pools only
C.heating rock with radiation
D.siphoning surface methane
Explanation
Core Concept
Water, sand, and chemicals fracture tight shale, releasing trapped gas — the technique behind the US gas boom and its water-contamination concerns.
Correct Answer
Apumping high-pressure fluid to crack shale
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