GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - C59TE4H7U7S1DE34J

Which of the following is information supplied in the passage that would support the statement that the food supplies necessary to sustain vent communities must be many times that of ordinary fallout? A. large vent faunas move from vent to vent in search of food B. vent faunas are not able to consume food produced by photosynthesis. C. vents are more densely populated than are other deep-sea areas