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: The vertebrate circulatory system enables blood to deliver ________ and remove wastes throughout the body.
Example Output: hydrogen and nutrients

Example Input: Which structure includes sugar-phosphate "backbones", composed of alternating phosphate groups and deoxyribose sugars, and nitrogenous bases?
Example Output: molecule double helix

Example Input: Niche refers to the role a species plays in what?
Example Output:
the habitat