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

Example Input: Gravity makes soil and rock particles move gradually down the slope during each thaw.
Example Output: What makes soil and rock particles move gradually down the slope during each thaw?

Example Input: Restoration ecologists type of ecologists work to identify and manipulate the processes that most limit recovery of ecosystems from disturbances.
Example Output: What type of ecologists work to identify and manipulate the processes that most limit recovery of ecosystems from disturbances?

Example Input: The nuclear envelope is a double-layered plasma membrane like the cell membrane, although without membrane proteins.
Example Output:
The nuclear envelope is a double-layered plasma membrane like the cell membrane, although without what?