Final answer:
Dehydration occurs when the body loses more water than it takes in, leading to various symptoms and potential complications.
Explanation:
Dehydration: When the loss of water exceeds the intake, the body's water content is reduced, resulting in negative water balance and dehydration. Causes: Prolonged physical activity without adequate water intake, heat exposure, vomiting, diarrhea, and more. Consequences: Symptoms include thirst, dizziness, low blood pressure, and even death if severe.
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