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How does aquatic life survive in extremely cold conditions even when the temperature goes below 0 C?
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. Thus, even though the upper layer are frozen, the water near the bottom is at 4°C and the fishes can survive in it easily.
Why do fishes survive in ponds even when the atmospheric temperature?
As we know ice is a bad conductor of heat. After sufficient thickness of ice is formed it prevents further loss of heat from the bottom layers of water. This is why fishes and other aquatic animals and plants can survive in ponds and other water bodies even when the atmospheric temperature reaches or is well below 0°.
What is the phenomenon due to which aquatic animals survive in cold countries even when temperature fall below 0 degree Celsius?
Answer: It is possible for aquatic animals to remain alive even though rivers and lakes freeze in winter because not the whole water bodies freezes. In cold countries the temperature of the water body decreases as a result of which ice is formed at the top . However water at the bottom does not freeze up.
How do aquatic animals survive in cold water?
only the top layer of the lake or river freezes. Underneath the frozen upper layer, the water remains in its liquid form and does not freeze. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds.
How do aquatic plants and animals survive in cold regions?
Answer. The aquatic plants and animals can survive in cold regions because of the property of anamalous expansion of water due to which the bed of the seas, rivers or oceans do not freeze,it just remains at 4°C and hence aquatic life is saved from cold in cold regions.
How fishes survive in ponds even when the atmospheric temperature is below zero degree?
Answer: Fishes survive in ponds even if the atmospheric temperature is below zero degree celsius because of the irrregular expansion of water also known as the ANOMALOUS EXPANSION OF WATER. Explanation: Underneath the frozen upper layer, the water remains in its liquid form and does not freeze.
What is an anomalous Behaviour of water?
Heat Transfer | Short/Long Answer Questions Water does not expand between 0°C to 4°C instead it contracts. It expands above 4°C. This means water has maximum density at 4°C. This is called anomalous behaviour of water.
How do aquatic plants and animals survive in water in winter?
When water boils at a certain temperature it turns into steam. When it is cooled to a certain temperature it freezes and becomes ice. Also, oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen lakes and ponds.
What can happen to plants and animals if the water temperature changes are too extreme?
As air and water temperatures increase, evaporation also increases, which may alter ecosystems, making native species more susceptible to die-off from competition with invasive species and in some cases more at risk of disease. Drier systems also creates greater potential for more extensive fire disturbance.
How do fish survive winter in ponds?
Koi, Shubunkins and most goldfish survive winter by staying inactive at the bottom of the pond where the water remains a constant cold temperature. Circulating the water during the winter will cause fluctuations in the water temperature and may adversely affect fish in their state of hibernation.
What kind of habitat does a pond have?
All the plants and animals in a pond form its habitat. The area around a pond includes water-loving plants and shelter for the birds and wildlife. In a healthy pond’s waters, plants, fish and other animals thrive in their aquatic ecosystem.
How are the plants and animals in a pond important?
All the plants and animals in a pond form the ecosystem that nurtures and maintains the water and surrounding habitat. Since all the elements depend on each other, once one crucial organism is removed, chances are the ecosystem of the pond will slowly deteriorate over time. Successful ponds have lots of different plants growing in them.
How do aquatic animals survive in frozen lakes?
Had the expansion of water been uniform the lakes or ponds would have been completely frozen or along with the aquatic plants and animals. In this situation no plant and animals. In this situation no plant and animal would have survived.
What happens to the temperature of the water in a pond?
Ponds usually regulate the same water temperature ranging from the water’s surface to the bottom. Ponds may freeze solid in colder climates.