The fact that ice has a lower density than liquid water is advantageous to marine life.

Name: The fact that ice has a lower density than liquid water is advantageous to marine life.
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This is because the lower density of ice means that it floats on top of the water, forming a layer that insulates the water below and keeps it from freezing completely. This allows marine life to survive in the liquid water below the ice, even in cold temperatures.

The Fact That Ice Has a Lower Density Than Liquid