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.

The rate of dissolving is influenced by surface area, stirring, and what else?
oxygen

What single-celled organism can be either a predator, decomposer, herbivore, or parasite in the food chain?
vertebrates

What reaction is considered the reverse of photosynthesis?
cellular transfer