Final answer:
A rejuvenated stream can form a deep V-shaped channel known as an entrenched meander. This process is part of the stream's evolution from youthful vertical erosion to a meandering pattern.
Explanation:
In geology, a rejuvenated stream refers to a stream that starts down-cutting again due to factors such as a drop in sea level or uplifted land. When a rejuvenated stream is in the old age stage, it forms a deep V-shaped channel within its meandering pattern, creating an entrenched meander, a distinct geologic feature.
This process is part of the stream's evolution, where initially in its youth it exhibits vertical erosion forming V-shaped valleys. As the stream matures, it may develop a sinuous flow pattern known as meandering due to erosion and deposition along its course.
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