Question

Which of the following human activities does NOT contribute to soil erosion?

Options

• Deforestation

• Overgrazing by livestock

• Planting trees

• Building roads

Answer 1

Planting trees

Explanation: 

Planting trees (afforestation) protects and binds the topsoil with roots and reduces runoff, so it prevents soil erosion. Deforestation, overgrazing and road-building remove or disturb vegetation and expose soil to wind and water erosion.