Question

4. Soil erosion of farms in hilly areas due to owing rainwater can best be controlled by: a. afforestation b. step farming c. building embankments d. covering with dry vegetation 5. Which of these can be caused by soil erosion? a. Flooding of rivers b. Spread of deserts c. Loss of fertility of soil d. All of these 6. Which of these causes of soil erosion is not due to human activities? a. Deforestation b. Fast flowing rivers c. Overgrazing by cattle d. Farming​

Answer 1

Answer:

Following steps are taken to control the soil erosion in hilly areas: (i) Contour ploughing: this refers to ploughing along contour lines. (ii) Terrace farming: construction of steps along the hilly areas by cutting the rock layers to reduce the flow of rivers. (iii) Plugging of gullies to prevent gully erosion.