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.

Input: Consider Input: What are the main organs for breathing in a mammal?

Output: gills

Input: Consider Input: What type of waves start when a source of energy causes a disturbance in the medium?

Output: fluid waves

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