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

Example Input: The heterotroph eats only or mainly plants.
Example Output: The heterotroph eats only or mainly what?

Example Input: Spring tides are created when the sun and moon's tides match.
Example Output: Which type of tides are created when the sun and moon's tides match?

Example Input: Metabolism produces waste energy in the form of heat, which helps warm-blooded (endotherm) animals conserve and maintain heat at a relatively constant body temperature.
Example Output:
Metabolism produces waste energy in the form of heat, which helps what type of animal conserve and maintain heat at a relatively constant body temperature?