How will you explain following statements with the help of the anomalous behaviour of water?In regions with cold climate, the aquatic plants and animals can survive even when the atmospheric temperature goes below 0^(@)C.

How will you explain following statements with the help of the anomalo

1.	How will you explain following statements with the help of the anomalous behaviour of water?In regions with cold climate, the aquatic plants and animals can survive even when the atmospheric temperature goes below 0^(@)C.
Answer» Solution :(i) In cold countries during winter, the temperature of air falls to `0^(@)C` or even below. (ii) As the temperature of air DECREASES, the water at the surface of the lake begins to contract due to which its DENSITY increases. (iii) When the temperature of the water falls below `4^(@)C`, due to its anomalous behaviour, the water expands instead of contracting. (iv) As the temperature of water falls to `0^(@)C`, the water on the surface of the lake gets converted to ice. (v) Since ice is a bad conductor of heat the water below the ice LAYER continues to remain at `4^(@)C` even though the temperature of air may fall below `0^(@)C`. (vi) HENCE, due to the anomalous behaviour of water, aquatic animals stay alive even when the temperature of air falls below `0^(@)C` .