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What method can be used to slow down the flow of water and prevent soil loss?
  • a)
    Terrace farming
  • b)
    Mulching
  • c)
    Rock dam  
  • d)
    Intercropping
Correct answer is option 'C'. Can you explain this answer?
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What method can be used to slow down the flow of water and prevent soi...
Rocks are piled up to slow down the flow of water. This prevents gullies and further soil loss.
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What method can be used to slow down the flow of water and prevent soi...
Understanding Soil Erosion and Water Flow
Soil erosion is a significant problem caused by the excessive flow of water, which can wash away the topsoil and nutrients essential for plant growth. To combat this, various methods are employed, one of which is the construction of rock dams.
What is a Rock Dam?
- A rock dam is a structure made of stones and rocks that are strategically placed in a waterway.
- It slows down the flow of water, allowing it to spread out and absorb into the ground rather than washing over the soil.
Benefits of Using Rock Dams
- Reduces Water Speed: By impeding the rapid flow of water, rock dams minimize soil erosion.
- Enhances Water Retention: Slower water flow increases the chances of water soaking into the soil, improving moisture levels for plants.
- Creates Habitats: The structure can create small ponds or wetlands that support diverse ecosystems.
How Rock Dams Prevent Soil Loss
- Silt Trapping: As water slows down, it loses its energy and the sediment it carries settles behind the dam, enriching the soil.
- Prevents Runoff: By reducing runoff, rock dams prevent the excessive washing away of topsoil during heavy rains.
Conclusion
While other methods like terrace farming, mulching, and intercropping also help in soil conservation, rock dams are particularly effective in directly slowing water flow and preventing soil loss. They serve as a practical solution in various terrains, especially in hilly or mountainous areas prone to erosion.
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What method can be used to slow down the flow of water and prevent soil loss?a)Terrace farmingb)Mulchingc)Rock damd)IntercroppingCorrect answer is option 'C'. Can you explain this answer?
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