What best explains why stream valleys become wider over time?
A. tectonic uplift causes valleys to widen naturally.
B. streams get further above base level.
C. meandering streams undercut their banks and cause mass wasting.
D. stream velocity becomes greater over time.
E. deposition of sediment creates a valley floor.
Answer: C
You might also like to view...
Which of the following describes matter and energy flow in an ecosystem?
A) Matter and energy both flow through an ecosystem. B) Energy flows through an ecosystem, whereas matter is recycled within an ecosystem. C) Matter and energy both cycle within an ecosystem. D) Matter and energy flow in opposite directions within an ecosystem. E) Matter flows through an ecosystem, whereas energy is recycled within an ecosystem.
Which of the following are necessary for rainbows to appear?
A) rain falling at some distance away B) clear sky above the viewer C) clear sky behind the viewer D) all of these
Our solar system is bigger in size than our galaxy.
a. true b. false
Which of the following is an example of how human actions have changed the lithosphere?
A) volcanic eruptions B) agriculture C) earthquakes D) ocean waves