Given a scientific question, generate an incorrect answer to the given question. The incorrect answer should be a plausible alternative to the correct answer. The answer should be some other item belonging to the same category as the correct answer but should be incorrect.

Example Input: Coal, oil and natural gas are types of what formed from the remains of once living organisms?
Example Output: living fossils

Example Input: Abundant in unpolluted ponds and streams, planarians prey on smaller animals or feed on?
Example Output: algae

Example Input: The only things that affect the period of a simple pendulum are its length and the acceleration due to gravity. the period is completely independent of other factors, such as this?
Example Output:
size