Question

The river, glaciers, underground water, winds, and waves are known as _________.
A. agents of weathering
B. agents of denudation
C. internal forces
D. agents of deposition

Answer 1

Hint: The river, glaciers, winds, waves, etc, are the agents of a process that results in wearing away parts of the surface of the earth. It is a long term process that takes years to occur.

Complete answer: The geographical process in which the breaking of removal of rocks from the surface of the earth by the movement and presence of certain agents is known as Denudation. The agents of denudation include river glaciers, underground water, winds, waves.
The erosive process can involve both removal of solid particles and dissolved materials. Several factors affect the process of denudation, these include climate, geology, biosphere, surface topography, tectonic activities, and anthropogenic activity.
While talking about the other options,
A. The process of breaking down of soils, rocks, wood, minerals, and artificial materials through the contact with the atmosphere of water, atmosphere, biological organisms of the earth is known as weathering. The agents of weathering include water, acids, salts, ice, animals, plants, etc.
B. The forces that act under the surface of the earth are the internal forces. The movement of tectonic plates and earthquakes are examples of the Internal Forces.
D. The geological process in which soils, rocks, and sediments are added to landform or landmass, a large area of land, is known as a deposition.

Thus the correct option is B.

Note: The process of weathering and denudation are not the same. The former is a short-term process while the latter is a long-term process. The process of weathering is considered as the first part of denudation. Hence, Weathering is a part of Denudation.