Which of the following statements are true about shale gas?

1.Shale gas is basically entrapped in sedimentary rocks.

2.The technology of hydraulic fracturing or fracking is used in shale-gas exploitation.

3.The USA is the major producer of shale gas.

A1 only

B2 only

C3 only

DAll of the above ✓ Correct

Correct answer: (D) All of the above

Explanation

All three statements about shale gas are accurate, so every one is true.

Statement 1 is correct, since shale gas is trapped within fine-grained sedimentary shale rock.

Statement 2 is correct, since hydraulic fracturing, or fracking, is used to release it.

Statement 3 is correct, since the USA is the leading producer of shale gas.

Fracking injects high-pressure fluid to crack the rock and free the trapped gas.

The US shale boom sharply raised its natural gas output.

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