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

Example Input: A volcano chain is formed by subduction of oceanic crust beneath a continental or oceanic plate.
Example Output: What kind of chain is formed by subduction of oceanic crust beneath a continental or oceanic plate?

Example Input: All of the populations that live in the same area make up a(n) community, which includes populations of different organisms.
Example Output: All of the populations that live in the same area make up what type of group, which includes populations of different organisms?

Example Input: Tonicity describes the amount of solute in a solution.
Example Output:
What describes the amount of solute in a solution?