Question

what is meant by anamolus expansion of water? explain how does this property of water support the animal and plants life in lakes and ponds.​

Answer 1

when water temperature decreses below 4°c it expands instead of contracting . this is anomalous expansion of water
in cold regions when water temperature decreases below 4° c it expands which means that density decreases and cold water comes up to surface and forms layer of ice . the water below ice layer remains uniform everywhere i.e 4°c

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