Q2 of 18 Page 100

When trees on the hillside are cut down, there is the danger of soil erosion on the hill.

The roots of trees hold the soil together, thus preventing the soil erosion. When large areas of the forest or trees are cleared, the topsoil gets eroded by wind and flowing water and leads to soil erosion.


More from this chapter

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1

Outbreaks of Water-borne diseases are common after heavy rainfall, especially in poor rural areas. Name any two water-borne diseases.

 2

Trees growing near a factory often gather a lot of dust on their leaves.

 2

It is dangerous to throw harmful chemical substances into rivers

 2

The water you drink nowadays is not safe.