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How is water useful in the protection of...

How is water useful in the protection of fruits and vegetables from damage during storage at sub zero temperature?

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At subzero temperature, does water convert into ice by loosing heat energy equal to its latent heat of fusion? What role does the specific heat capacity of water play. Find the amount of (heat energy) latent heat of fusion.
Can this energy be used to protect the fruits and vegetables from freezing temperature?
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