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What has the highest net energy ratio for transportation?
Q8: Which of the following is better than
Q20: What are some of the advantages of
Q24: _ can be used in stationary applications
Q30: Which measure is urged by scientists,who claim
Q55: The _ can be weakened by chemicals
Q57: Which of the following is NOT a
Q81: What occurred as a result of diverting
Q89: Which excursion is an environmentalist unlikely to
Q91: What has the Earth's average surface temperature
Q104: What are the basic causes of depletion