Which one of the following is TRUE concerning a major river system?
A)Channel bed roughness and turbulence generally increase downstream.
B)Upstream tributaries generally have lower gradients than the major river.
C)Discharge decreases below junctions with perennial tributaries.
D)Upstream tributaries generally have higher competencies than the major river.

Question

Quizplus · Accepted Answer

Upstream tributaries generally have higher competencies than the major river because they are often steeper and have more energy to transport larger particles.

Which One of the Following Is TRUE Concerning a Major