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

Input: Consider Input: Passage: The population is an important unit in ecology as well as other biological sciences. How is a population defined, and what are the strengths and weaknesses of this definition? Are there some species that at certain times or places are not in populations?. Answer: cell division

Output: During interphase, the cell undergoes normal growth processes while also preparing for what, by accumulating energy and building blocks of dna?

Input: Consider Input: Passage: Experiments are sometimes hard or even impossible to do. For example, a scientist who is studying an extinct animal cannot experiment with the animal because it no longer exists. The scientist must rely instead on evidence in the natural world, such as fossils that the extinct animal left behind. Answer: experiments

Output: What can be hard or even impossible to perform in a scientific sense?

Input: Consider Input: Passage: Most of the adult bees in a colony are workers. They cooperate to build the hive, collect food, and care for the young. Each worker has a specific task to perform, depending on its age. Young worker bees clean the hive and feed the offspring. Older worker bees build the waxy honeycomb or guard the hive. The oldest worker bees leave the hive to find food. Answer: worker bees
Output: What kind of bees are most adult bees in a hive?