Final answer:
The author's position in Passage 1 regarding the use of biofuels is negative. The passage highlights the limitations and challenges of biofuels from crops, and suggests exploring alternative options like artificial photosynthesis.
Step-by-step explanation:
The author's position in Passage 1 regarding the use of biofuels can be considered negative. The passage discusses the limitations and challenges associated with biofuels from crops, such as corn ethanol, as they compete with food production and require a significant amount of arable land. The passage suggests that biofuels from plant waste or cellulosic conversion may have moderate potential, but even then, they are undemonstrated. The author also mentions that if biofuels are hampered by low EROEI values, artificial photosynthesis could be explored as an alternative.