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

Example Input: Temperature and sky conditions are both used to describe weather.
Example Output: Which two observations are both used to describe weather?

Example Input: Photoautotrophs and chemoautotrophs are two basic types of autotrophs.
Example Output: Photoautotrophs and chemoautotrophs are two basic types of what?

Example Input: Sympatric speciation is when a new species arises without geographic separation.
Example Output:
What is it called when a new species arises without geographic separation?