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== == Its because we are made up mostly of water. If you dont give the body water, the blood cells cannot deliver it to all the cells of the body that rely on it to stay alive. If they dont get water, the individual cells die of dehydration. If this happens in large quantities, the host (body) dies of dehydration as well. The same is true of oxygen and food.

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16y ago
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15y ago

because they will die of thirst

by mouniqe

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Q: Why do people need water to survive?
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