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 Q]: Water is a polar compound, so its molecules are attracted to each other and form what kind of bonds?
[EX A]: mixed

[EX Q]: The wavelength of a what type of wave can be measured as the distance between two adjacent compressions?
[EX A]: horizontal

[EX Q]: What are the two ways animals can manage their internal environment?
[EX A]:
digestion or excretion