Question

Explain any three measure to check soil erosion

Answer 1

Avoid Degredation of land                                                                                       Control of grazing activities by lifestock                                                                 Planting f tress to serve as wind breaks and shelter cover for soil                        Growing of cover crops such as beans, cowpea,groundnut etc                               Mulching                                                                                                                 Terracing  of Lands                                                                                               Ploughing on countered lands.                                                                         

Answer 2

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Soil Erosion➫ The removal of top layer of the soil by the action of wind & rainfall is called soil erosion.

♦ This is a naturally occurring process that affects all landforms.

❱ This natural process is caused by the dynamic activity of erosive agents like:-

♦ Water
♦ Ice
♦ Snow
♦ Air
♦ Plants
♦ Animals
♦ Humans

➧ Types of Erosion are:-
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[1] Splash Erosion:-

❱ The first stage in the Erosion process.
Splash Erosion results from the bombardment of the soil surface by rain drops.

[2] Sheet Erosion:-

❱ The uniform removal of soil in thin layers by the forces of raindrops & overland flow.

[3] Rill Erosion:-

❱ The removal of soil by concentrated water running through little streamlet.

[4] Gully Erosion:-

❱ The removal of soil along drainage lines by surface water runoff.

➧ Causes 0f Soil Erosion are:-
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❱ Water

❱ Winds

❱ Glacier

❱ 0ver Grazing

❱ Human Activities

➧ Factors that cause Soil Erosion are:-
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❱ Rainfall

❱ Topography

❱ 0vergrazing

❱ Deforestation

❱ Human Activities

❱ Presence of 0rganic Materials in Soil

➧ Measures to Prevent Soil Erosion are:-
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❱ Strip Farming

❱ Soil Rotation

❱ Soil Stabilisation

❱ Terrace Farming

❱ Vegetation Cover

❱ Controlled 0ver-Grazing

➧ Effects 0f Soil Erosion are:-
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❱ Landslides

❱ Flash Floods

❱ Desertification

❱ Loss of soil fertility

❱ Silting of Rivers & Lakes

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