Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: An alkaline battery is a variation on the zinc-carbon dry cell. The alkaline battery has no carbon rod and uses a paste of zinc metal and potassium hydroxide instead of a solid metal anode. The cathode half-reaction is the same, but the anode half-reaction is different. Answer: electrolytes
A:
Deficiency of what is symptomized by nausea, fatigue and dizziness, and can be triggered by excessive sweating?