Ravines are widespread in the Chambal basin.

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Explanation:
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Ravines, also known as gullies or badlands, are deep and narrow erosional features formed by the continuous action of running water on soft sedimentary rocks. They are characterized by steep slopes and sharp, irregular sides. Ravines are commonly found in areas with low rainfall, sparse vegetation, and easily erodible soil.

The Chambal basin is a region located in northern India, primarily in the states of Madhya Pradesh and Rajasthan. It stretches along the Chambal River, which is a tributary of the Yamuna River. The Chambal basin is known for its rugged topography, with ravines being a prominent feature of the landscape.

Here are some reasons why ravines are widespread in the Chambal basin:

1. Geological Composition: The Chambal basin is primarily made up of soft sedimentary rocks, such as sandstone and shale. These rocks are easily eroded by the force of water, leading to the formation of ravines.

2. Lack of Vegetation: The Chambal basin has a semi-arid climate, with low rainfall and limited vegetation cover. The absence of dense vegetation results in less protection against erosion, allowing ravines to form more easily.

3. Erosion by the Chambal River: The Chambal River, with its strong current and high sediment load, plays a significant role in the formation of ravines. As the river cuts through the landscape, it erodes the soft rocks and creates deep channels or gullies.

4. Human Activities: Human activities, such as deforestation, overgrazing, and improper agricultural practices, can accelerate erosion in the Chambal basin. These activities remove the natural vegetation cover and disturb the soil, making it more susceptible to erosion and the formation of ravines.

Overall, the Chambal basin's geological composition, lack of vegetation, erosion by the Chambal River, and human activities contribute to the widespread presence of ravines in the region. These ravines not only shape the landscape but also have ecological and socio-economic implications for the local communities.