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.

What causes acid rain, ozone depletion, and global warming?
ozone layer

What happens if a person doesn't take in enough water to replace the water lost in sweat?
diarrhea

People with type o blood are often called what?
flexible donors