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

Input: Consider Input: Producers in an ecosystem generally get their energy from the sun.

Output: Where do producers in an ecosystem generally get their energy from?


Input: Consider Input: Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.

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


Input: Consider Input: Air quality is a measure of pollutants in the air.
Output: Air quality is a measure of what in the air?