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

Passage: Population size is the number of individuals in a population. For example, a population of insects might consist of 100 individual insects, or many more. Population size influences the chances of a species surviving or going extinct. Generally, very small populations are at greatest risk of extinction. However, the size of a population may be less important than its density. Answer: extinction
Output:
Population size influences the chances of a species surviving, with very small populations generally at greatest risk of what fate?