Bhutan, Nepal, and Sri Lanka all face the threat of lost farmland due to
1, mudslides
2, soil erosion
3, damage to aquifers
4, water pollution ( i know this one is wrong)
please help
Soil Erosion
Yes, 2.
Bhutan, Nepal, and Sri Lanka all face the threat of lost farmland due to:
1. Mudslides: Mudslides can occur in hilly or mountainous regions and can result in significant damage to farmland. When heavy rains saturate the soil, it becomes unstable and can easily slide downhill, burying or washing away farmland.
2. Soil erosion: These countries also face the risk of soil erosion, which is the process of soil being carried away by wind or water. This can occur due to improper land management practices, such as deforestation, overgrazing, inadequate irrigation, or intense rainfall. As the topsoil gets eroded, it becomes less fertile and suitable for farming, leading to decreased agricultural productivity.
3. Damage to aquifers: Aquifers are underground water reserves that provide water for irrigation purposes. Over-extraction of groundwater for agriculture, along with improper irrigation practices, can deplete these aquifers and lead to their long-term damage. This can result in a scarcity of water for farming and negatively impact farmland productivity.
While water pollution is not directly related to lost farmland, it is still an important environmental issue that can have indirect impact on agricultural productivity, especially if it affects water sources used for irrigation or contaminates the soil. However, among the options listed, water pollution is not the primary threat to lost farmland in these countries.
To determine which answer is correct, let's examine each option:
1) Mudslides: Mudslides can indeed lead to the loss of farmland in hilly or mountainous regions. However, it is not the primary threat faced by Bhutan, Nepal, and Sri Lanka.
2) Soil erosion: Soil erosion is the process by which topsoil is removed or displaced due to the actions of wind, water, or human activities. It is a significant threat to farmland as it can reduce soil fertility and productivity. Soil erosion is a common problem in many regions, including Bhutan, Nepal, and Sri Lanka, making it a likely answer.
3) Damage to aquifers: Aquifers are underground layers of water-bearing rock or sediment. Damage to aquifers occurs when human activities or environmental factors cause depletion or contamination of the groundwater. While water scarcity can impact farmland, damage to aquifers is not specifically mentioned as a threat faced by Bhutan, Nepal, and Sri Lanka in this context.
4) Water pollution: While water pollution can have adverse effects on ecosystems and human health, it is not directly related to the threat of lost farmland mentioned in the question.
Based on the information provided, it appears that the most probable answer is 2) soil erosion. It is essential to note that further research or specific knowledge of the situation in these countries may provide more accurate insights.