Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: Most people think of opossums as scary creatures. Is this because they look kind of funny, walk kind of funny, have beady eyes and sharp teeth, and can emit a very foul odor? Maybe. But what is so different about opossums is that they are the only marsupial in North America. Answer: oppossum
A:
What is the only marsupial in north america?