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

Example Input: The mesopause is at the top of the mesosphere.
Example Output: What is at the top of the mesosphere?

Example Input: A moose eats a plant is an example of a living thing that depends on another living thing to survive.
Example Output: Which statement best identifies a living thing that depends on another living thing to survive?

Example Input: Turbulent atmosphere does neptune's appearance change.
Example Output:
Why does neptune's appearance change?