The correct answer is: b) Growing the same crop year after year.
Monocropping is a farming practice in which a single crop is grown in a field year after year. This practice can lead to a number of problems, including soil erosion, nutrient depletion, and the development of pests and diseases.
Soil erosion is the process by which soil is removed from the land by wind or water. Monocropping can lead to soil erosion because the same crop is grown in the same field year after year. This can cause the soil to become compacted, which makes it difficult for water and nutrients to penetrate the soil. As a result, the soil becomes more susceptible to erosion.
Nutrient depletion is the process by which nutrients are removed from the soil. Monocropping can lead to nutrient depletion because the same crop is grown in the same field year after year. This can cause the soil to become depleted of nutrients that are essential for plant growth. As a result, the plants may not be able to grow as well as they would if they were grown in a field with a variety of crops.
The development of pests and diseases is another problem that can be caused by monocropping. When the same crop is grown in the same field year after year, pests and diseases that attack that crop can build up in the soil. This can make it difficult to control these pests and diseases, which can damage the crop.
In conclusion, monocropping is a farming practice in which a single crop is grown in a field year after year. This practice can lead to a number of problems, including soil erosion, nutrient depletion, and the development of pests and diseases.