The sea-level surface envisaged to lie beneath an entire landmass that represents the lower limiting level is referred to as the:

Question

Quizplus · Accepted Answer

The term "base level" refers to the theoretical level below which a stream's erosion cannot occur. In the case of a sea-level surface beneath a landmass, this would represent the lowest possible base level for any stream in the area. The other answer choices are not directly related to this concept. A peneplain is a broad, relatively flat region resulting from long-term erosion and weathering. A flood plain is the flat land adjacent to a river that is prone to flooding during high-water events. A graded profile describes the shape of a stream as it approaches equilibrium between erosion and deposition. A stream profile is a cross-sectional view of a stream, showing its changing elevation and gradient over its course.

The Sea-Level Surface Envisaged to Lie Beneath an Entire Landmass