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.

Ex Input:
Traditional classification of mammals are based on similarities in what two things?

Ex Output:
solution & function

Ex Input:
What organ breaks down excess amino acids and toxins in the blood?

Ex Output:
kidney

Ex Input:
Viruses were assumed to exist before they were first seen with an electron microscope in which decade?

Ex Output:
1960's