Question

Explain What is the role of anomalous behaviour of water in preserving aquatic life in regions of cold climate?

Answer 1

Dear Student,

● Anomalous behaviour of water to preserve aquatic life -

• In region of cold climates, water shows anomalous behaviour with respect to its density.
• Density of water is maximum at 4 °C. When water is cooled from high temperature, its density will increase till 4 ℃ and beyond 4 ℃ it will start to decrease again.
• As a result, the pond of water has its top layer frozen while there is liquid water underneath.
• This helps maintain temperature of 4 ℃ inside water which helps aquatic life.

Thanks dear. Hope this helps you...

Answer 2

Answer: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. A circulation is thus set up until the entire water in the pond reaches its maximum density at 4°C. If the temperature falls further, the top layer expands and remains on the top till it freezes. Thus even though the upper layer are frozen the water near the bottom is at 4°C and the fishes etc. can survive in it easilyeasily

Explanation: