The correct answer is: d) All of the above.
Deforestation, overgrazing, and heavy rainfall are all major causes of erosion in Assam. Deforestation removes trees, which help to hold soil in place. Overgrazing can also damage the soil and make it more susceptible to erosion. Heavy rainfall can cause the soil to be washed away, especially if it is not properly protected.
Erosion is a major environmental problem in Assam because it can lead to a loss of fertile land, damage to infrastructure, and the displacement of people. It can also contribute to the pollution of water bodies.
There are a number of things that can be done to prevent erosion in Assam, including:
- Planting trees and other vegetation
- Reducing overgrazing
- Building terraces and other structures to protect the soil
- Managing water resources carefully
These measures can help to protect the environment and ensure the long-term sustainability of Assam.
Here are some additional details about each of the causes of erosion in Assam:
- Deforestation: Deforestation is the removal of trees from an area. This can be done for a variety of reasons, such as to clear land for agriculture, development, or logging. When trees are removed, the soil is no longer held in place and can be easily washed away by rain or wind. This can lead to a loss of fertile land, damage to infrastructure, and the displacement of people.
- Overgrazing: Overgrazing is when too many animals are allowed to graze on an area of land. This can damage the soil and make it more susceptible to erosion. Overgrazing can also lead to the loss of vegetation, which helps to hold the soil in place.
- Heavy rainfall: Heavy rainfall can cause the soil to be washed away, especially if it is not properly protected. This can lead to a loss of fertile land, damage to infrastructure, and the displacement of people.
I hope this information is helpful. Please let me know if you have any other questions.