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:
What element once commonly used in paint and gasoline has now been found to have dangerous effects?

Ex Output:
plastic

Ex Input:
What holds together the small molecules called nucleotides which make up nucleic acids?

Ex Output:
permanent bonds

Ex Input:
The fossilized skeleton of archaeopteryx looks like that of a dinosaur, but it had what structures modified for flight, a trait associated only with birds among modern animals?

Ex Output:
fingers