Q: Two regions, region A and region B, shared a common border, a river. Region A was favorable for sulfate-reducing bacteria and nitrogen fixing bacteria, while region B was more favorable for the developement of Non-respiratory anaerobes and facultative anaerobes. Which region had less acetogenesis?
A: region B

Q: The Berg mountains in Berg county are of a volcanic nature, very massive, few caves. The Gorge mountains in Gorge county are made of sedimentary rocks, predominantly limestone. They were exposed to water and that lead to karst lanscapes, caves, blue holes, stalactites and stalagmites. Which of the two mountains eroded faster over time?
A: Gorge

Q: Michael and Robert are both performing a chemistry experiment. The reaction they are performing uses alkenes and hydrogen as reactants. Michael performs the experiment without any additional materials, while Robert performs the experiment while using a platinum catalyst. Who will have a lower reaction rate in their experiments?
A: Michael

Q: This year thee comets would be of interest, comet A, comet B, and comet C. Comet A and comet B would enter the inner solar system. But comet C would not enter the inner solar system. Moreover, comet A is categorized as a bright comet, but comet B is categorized as a faint comet. Whcih comet would be visible to naked eye, comet A or comet B?
A:
comet A