Given a scientific passage and an answer, generate a question for the given answer.

Example Input: Passage: The amount of material left over after a certain number of half-lives can be easily calculated. Answer: pheromone
Example Output: What term is used to describe a chemical released by an animal that affects the behavior or physiology of animals of the same species?

Example Input: Passage: Are you on the basketball team? Are you a cheerleader? Do you play an instrument in the band? Your niche would be your role or place in the school. Organisms also each have their own niche in the ecosystem. Is an organism a producer or a consumer? How does the organism interact with other organisms? Is the organism involved in any symbiotic relationships?. Answer: niche
Example Output: An organism's unique role in the ecosystem is called its what?

Example Input: Passage: Coelacanths are ancient fish with just two living species. They are at risk of extinction because of their very small numbers. Answer: coelacanths
Example Output:
Which ancient fish has just two living species and is at risk of extinction?