Sea level is the base level, or lower limit, of stream downcutting.

Question

Quizplus · Accepted Answer

This statement is true. Sea level is the reference point for measuring elevation and is also the base level for stream downcutting. The height of land above sea level determines the potential energy of a stream, and water flows downhill from higher to lower elevations, ultimately reaching base level which is sea level in most cases. Stream downcutting occurs as streams and rivers erode their channels to reach base level.

Sea Level Is the Base Level, or Lower Limit, of Stream