Question
What is soil erosion? Give two methods for reducing it.
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Answer
Soil erosion is defined as the wearing away of topsoil. Topsoil is the top layer of soil and is the most fertile because it contains the most organic, nutrient-rich materials. Simple Solutions to Prevent Soil Erosion: Vegetation: The simplest and most natural way to prevent erosion is through planting vegetation. Plants establish root systems, which stabilizes soil and prevents soil erosion.soil erosion. Geotextiles: Using geotextiles is an effective method because it also stabilizes soil. When used in conjunction with growing vegetation, it is even more effective. There are three main types of geotextiles: woven, nonwoven, and coir. Mulch/ Fertilizer: Applying a layer of mulch to the soil top allows the soil to slowly soak up water, as it protects against rain impact, and restores pH levels helping with erosion prevention. Retaining Walls: Retaining walls can be built around the area of erosion to prevent water runoff. Runoff water leads to further erosion, and if used with other methods, retaining walls can be a very effective way to prevent soil erosion.
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→Mass of the Jupiter $= 2 x \ 1027 \ kg$
Mass of the Saturn $= 6 x \ 1026 \ kg$
The distance of Jupiter from the earth $= 6.3 x \ 10 \ m$
The distance of Saturn from the earth $= 1.28 x \ 1012 \ m$
$ii$. A bag of sugar weighs $'w\ '$ at a certain place on the equator. If this bag is taken to Antarctica, then will it weigh the same or more or less. Give a reason for your answer.
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