Question

question 12 of 25
a low area of land often forms between hills or mountains. this low area is
called a valley. which of the following might cause a valley to form?

a. waves from the ocean

b. erosion by a stream

c. soil creep from freezing and thawing

d. basaltic lava flow from fissures

Explanation:

Erosion by a stream (fluvial erosion) is a common process that carves out valleys. Streams can erode the land over time, creating low - lying areas (valleys) between higher landforms (hills or mountains). Waves from the ocean primarily affect coastal areas. Soil creep from freezing and thawing is a slow mass movement process that usually causes more subtle changes in slope morphology rather than forming large - scale valleys. Basaltic lava flow from fissures is more associated with creating volcanic landforms like lava plains or shield volcanoes rather than valleys.

Answer:

B. Erosion by a stream