what are sand dunes for class 7th ncert
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A sand dune is a mount, hill or ridge ofsand that lies behind the part of the beach affected by tides. They are formed over many years when windblown sand is trapped by beach grass or other stationary objects. ... Without vegetation, wind and waves regularly change the form and location of dunes.
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A sand dune is a mount, hill or ridge ofsand that lies behind the part of the beach affected by tides. They are formed over many years when windblown sand is trapped by beach grass or other stationary objects. ... Without vegetation, wind and waves regularly change the form and location of dunes.
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the low hilllike structure formed due to deposition of sand at one place by the wind in the desert is called sand dunes.
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