The anomalous expansion of water, with maximum density at 4°C, is crucial for the survival of aquatic life in cold climates.
In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because
Asked in UPPCS Prelims 2005 · Topic: Heat and Thermodynamics (Modes of Heat Transfer (Conduction, Convection, Radiation))
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Answer: D. water has highest density at 4°C so under‐ neath the top layer of ice there is layer of wa‐ ter.
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