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

Example Input: Solid form do alkali metals take at room temperature.
Example Output: What form do alkali metals take at room temperature?

Example Input: Producers in an ecosystem generally get their energy from the sun.
Example Output: Where do producers in an ecosystem generally get their energy from?

Example Input: The innate immune system serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body.
Example Output:
What serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body?