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

Example Input: Renewable energy sources emit fewer or no greenhouse gases.
Example Output: What type energy sources emit fewer or no greenhouse gases?

Example Input: Multiple genes mutations is usually necessary to develop cancer.
Example Output: What is usually necessary to develop cancer?

Example Input: They roll in a pool of muddy water to avoid fly bites do moose use a learned behavior to protect themselves.
Example Output:
How do moose use a learned behavior to protect themselves?