Primary Energy Sources Are Those for Which Their Ultimate Source

Q8: Most of the hydrocarbons in gasoline come

Q9: Coal, oil, and natural gas are<br>A)renewable fuels<br>B)fossil

Q10: Which form of energy is most convenient

Q11: Secondary energy sources get their energy from<br>A)electricity<br>B)solar<br>C)coal<br>D)another

Q12: The main concerns about hydraulic fracturing (fracking)

Q13: One way to import natural gas from

Q14: Fairly recent advances which made natural gas

Q15: The direct use of living matter as

Q16: The release of energy trapped under the

Q18: Why is importing oil only a short-term