Explain the effects of expansion of water on aquatic life​

The anomalous expansion of water helps preserve aquatic life during very cold weather. When temperature falls, the top layer of water in a pond contracts, becomes denser and sinks to the bottom. If the temperature falls further, the top layer expands and remains on the top till it freezes.

1. Type of Material

2. Charge of an object

3. movement of an object

4. Presence of an electric field

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