A ________ of sea-level causes a lowering of base-level and ________ in the lower part of a stream valley that terminates in the ocean.
A) rising, incision
B) rising, sedimentation
C) lowering, sedimentation
D) lowering, incision

Question

Quizplus · Accepted Answer

A lowering of sea-level causes a lowering of base-level, which leads to incision in the lower part of a stream valley that terminates in the ocean. This is because the stream has to cut down its bed to reach the new lower base level. Sedimentation would not occur in this case as the stream is cutting downward rather than depositing sediment.

A ________ of Sea-Level Causes a Lowering of Base-Level and ________

A of Sea-Level Causes a Lowering of Base-Level and