► Most lakes are permanent while others contain water only during the rainy season.
Some lakes are the result of the glacial action and ice sheets and some may have been formed by wing
river action and human activities.
→ A river meandering across a floodplain forms cut-offs that later develop into oxbow lakes.
Glacial lakes are formed when glaciers dig out a basin which is later filled with snowmelt.
► Some lakes like Wular Lake in Jammu and Kashmir result from tectonic activity.
>> Apart from natural lakes, the damming of the rivers for the generation of hydel power has also led
the formation of lakes.
Lakes help to regulate river water flow, prevent flooding, aid to develop hydel power, moderate clima
maintain aquatic ecosystem, enhance natural beauty, develop tourism and provide recreation.
The ans is correct for lakes
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