The lack of oil on the market and the very low prices for crude petroleum and fuels in 2014-2015 may
A) hasten the transition to and investment in renewable fuels.
B) bring even greater pressure to convert agricultural corn crops to ethanol.
C) remove the necessity to improve energy efficiency of technology.
D) threaten the economic viability of renewable energies.
Question 2
If some current trends and energy strategies continue and succeed over the next few decades, in 50 years, you might be able to say that you witnessed the shift from
A) an energy-consuming economy to an energy-producing economy.
B) a wind-driven economy to a solar economy.
C) an unsustainable fossil-fuel-driven economy to a sustainable renewable energy economy.
D) a renewable energy- driven economy to a clean-burning natural gas economy.