Question

Sea cliff, sea caves, lagoons are the landforms created by the action of _ _ _ _ _ _ .
A. Glacier
B. Wind
C. Sea waves
D. River

Answer 1

Hint: - These landforms provide a scenic beauty to the coastal areas of a country.
- Sea cliffs have very steep slopes whereas sea caves are hollow cuts formed on elevated land or sea cliffs along the coast, forming a cave-like structure.
- Lagoons are water bodies which are shallow and away from the main water body, usually oceans. This separation is created by sand barriers or coral reefs.

Complete Answer:
A. Glaciers: A mass of sheet moving at an average speed of a few meters in a day is known as a glacier. It is further classified as ice caps, continental glaciers, valley glaciers and piedmont glaciers. While moving at an average speed it creates many landforms which can either be erosional or depositional. Examples of Landforms created by it are drumlins, outwash plains, Cirque, horn, hanging valleys etc.

B. Wind: Being a geomorphic agent, winds perform both erosional and depositional processes and in such processes, it creates many significant Landforms. For example - mushroom rocks, inselbergs, demoiselles, yardangs and sand dunes etc.

C. Sea waves: The erosion and deposition processes are carried out by sea waves, aided by winds, currents, tides and storms. The erosion of the sea depends on the size and strength of the waves, the slope, the height of the shore during low and high tides, the form of the coast, the composition of the cliffs, the depth of the water, human activity, etc. Major Landforms formed by them are sea arches, stacks, sea cliffs, beaches, sea caves, bars and lagoons etc.

D. River: Running water of a river creates a large number of Landforms on its way. The landforms formed by degradation (erosion) or aggradation (deposition) of running water are referred to as fluvial landforms. Following are examples of such landforms: Delta, estuaries, levees, alluvial fans etc.

Thus the correct answer is option C.

Note: Delta of river Ganga and Brahmaputra is the largest Delta in the world. It is also known as the Sunderban Delta because of the presence of Sundari trees in a large number. It has also been conferred with the status of a world heritage site by UNESCO.