Water and Ice
Unique property of water - Changing density with temperature
Have you seen a frozen lake? Is it frozen like your ice cube? Do fishes get frozen with
the lake? That is not the way it happens. A water body in sub zero temperature may appear
frozen, but actually it may be still liquid beneath an ice covering. Ice is less
dense than water so it floats.
Protects aquatic life from freezing to death in sub zero
climatic conditions. Water is Life, literally.
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Water & Physics