Question

Q10. What is the role of the anomalous behavior of water in preserving aquatic life in regions of cold climate? [3 marks]​

Answer 1

Due to the anomalous behaviour of water, it contracts from 0°C to 4°C and beyond 4°C it expands. [1 mark]​

The ice formed on the top layer of the water body acts as an insulator and does not allow the temperature of the water layer below it to fall below 4°C. ​

​This ensures that a temperature is maintained for the survival of aquatic life under the water body.
[2 marks]​