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Why can soil erosion increase after natural vegetation decreases in an area?

Answer and explanation

Correct answer: Because soil loses the hold of roots

Natural vegetation protects soil in several ways. Plant roots hold soil particles together, while stems and leaves reduce the direct force of falling rain. Vegetation also slows surface water and allows more water to enter the ground. When plants disappear, the soil becomes loose and exposed, so wind and running water can carry it away more easily. This process is called soil erosion.

Option A is correct because it identifies the main protective role of roots. The statement does not mean that every root holds every layer equally, but it gives the essential school-level reason: removal of vegetation removes an important binding force. The other choices are incorrect because rainfall does not always stop, temperature does not become zero, and soil does not turn into stone and fly. Thus reduced vegetation can increase erosion.

Related tags

Vegetation LossSoil ErosionRoot Binding

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