Rejuvenation
Rejuvenation occurs - fall in sea level relative to the level of the land or a rise of the land relative to the sea.
The river renews its capacity to erode as its potential energy = increased.
The river adjusts to its new hase level, at first in its lower reaches and then progressively inland = a number of landforms may be created: knick points, waterfalls and rapids, river terraces and incised meanders.
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