Conservation of Resources and Pollution — BIOLOGY STD 8 — Question
ICSE BoardEnglish MediumSTD 8BIOLOGYConservation of Resources and Pollution2 Marks
Question
What is soil erosion ? List two causes of soil erosion.
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Answer
At many places, rich top soil is lost or is carried away either by wind or water. This process is called soil
erosion. It normally takes places in areas where the land is without vegetable as the roots of plants hold the soil. Fine particles are also washed away by rain often on hilly slopes.
Causes of Soil Erosion :
$1.$ Deforestation : Cutting down of trees leads to soil erosion as the roots of trees bind the soil firmly.
$2.$ Ploughed farm land which has loose soil is also susceptible to erosion by air and water.
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