Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Example Input: Sexual reproduction, in general, relies on sets of cells that are precursors for eggs and sperm.
Example Output: What kind of reproduction, in general, relies on sets of cells that are precursors for eggs and sperm?

Example Input: Protists are thought to be the oldest eukaryotes.
Example Output: What is thought to be the oldest eukaryotes?

Example Input: Population is an important level of organization in ecology and the unit of microevolution.
Example Output:
What is an important level of organization in ecology and the unit of microevolution?