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

Example Input: Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.
Example Output: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms?

Example Input: Seeds of a pine cone are easily carried by the wind and dispersed because seeds have wings.
Example Output: Why are seeds of a pine cone easily carried by the wind and dispersed?

Example Input: Although it is the easiest to observe, color is not ideal as a sole way to identify minerals.
Example Output:
Although it is the easiest to observe, what property is not ideal as a sole way to identify minerals?