What are the causes of degradation?

The leveling of the surface by natural processes is called gradation. Gradation reduces the difference in heights of the various landforms. Running water, wind, nerving ice and sea waves all they are called the agents of gradation. When the agents of gradation break up rocks and carry away the rock paroles from the land surface, this phenomenon is called erosion. When the erosion occurs, it lowers the surface of landforms which is known as degradation.

Weathering:

The disintegration and decomposition of rocks is called weathering.

Landslide:

In mountainous regions, heavy rainfall breaks large chunks of rocks and slide down from the upper portion of the mounts to the lower one. This phenomenon is called landslide,

Gorges:

When a river flows in the region where hard rocks are found, it forms a narrow valley. This narrow valley with steep wall like slides is called a gorge.

Canyons:

When the size of the gorge Is very large, It Is known as canyon.

Water fall:

When a flowing river descends suddenly from a higher level to a lower level and waterfalls vertically, this phenomenon is called water fall,

Rapids:

When a river flows rapidly through many down irregular, alopes. The phenomenon is called rapids,

Cascades:

A number of rapids in a series are called a cascade.

Meanders:

In the plains the river moves slowly. Its course forms broad S-shaped loops. These loops are called meanders.

Delta:

The region near the river’s mouth comprising a network of distributaries is called a delta.

Ice sheet:

The thick mass of permanent ice covering a very large area Is called an ice sheet.

Glacier:

A large mass of moving ice is called a glacier.

Beaches:

Sediments present in sea water are deposited along the sea coast and form a beach.

Lagoon:

A lake of sea water separated from the sea by sand bars is called a lagoon.