21. Which of the following statements is a challenge to the use of natural gas? a. Fracking has decreased supplies of na

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21. Which of the following statements is a challenge to the use of natural gas?
a. Fracking has decreased supplies of natural gas.
b. Its use results in higher carbon emissions than the use of coal.
c. It has a higher Levelized cost than nuclear energy.
d. Its use results in higher methane emissions than the use of coal.
22. Why is natural gas costly to transport long distances?
a. It has a high energy density
b. Liquified natural gas is costly to produce and needs specially constructed tankers
to ship.
c. FERC regulations drive up the cost of exported natural gas.
d. It is shipped in specially designed pipelines.
23. Which of the following statements on Levelized cost is correct?
a. It compares the discounted average cost of generating electricity using different
fuels over the plant’s lifetime.
b. It is able to reflect different characteristics of fuels.
c. It reflects on price external cost.
d. Natural gas has a high Levelized cost compared to coal.
24. Which one is a benefit of vertical integration of coal production and end-use for electric
utilities?
a. It increases transaction costs.
b. It makes it easier for the regulator to determine the input of coal.
c. It offers greater assurance of a dependable coal supply.
d. It eliminates concerns about labor relations between coal suppliers and electricity
utilities.