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: What part of the brain is largest in intelligent mammals?
Example Output: thallus

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: What causes light to refract?
Example Output:
speeding up