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Geography

Which topographic feature is primarily formed by the mechanism of solifluction in periglacial environments?

A)Terracettes on moderate slopes
B)Kettle lakes in outwash plains
C)Eskers within glacial valleys
D)Drumlins in till plains

💡 Explanation

When freeze-thaw cycles occur above permafrost, solifluction (soil flow) happens because the active layer thaws and saturated soil slowly flows downslope, forming terracettes. Therefore formation of terracettes is the result, rather than kettle lakes, eskers, or drumlins which are caused by glacial meltwater or ice deposition.

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