Question

The ____________ course of a river begins where the river leaves the mountains and enters the plains. ​

Answer 1

Answer:

UPPER COURSE

Explanation:

When the river meets resistance when trying to enter the sea or lake. 3 Stages of a River. YOUTHFUL STAGE (UPPER COURSE)

Answer 2

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The ____________ course of a river begins where the river leaves the mountains and enters the plains. 

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Upper

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