Question

Soil erosion is a process where the top soil layer is washed away because of the effects of water or wind. An agricultural area loses its topsoil because of excess flooding. What three actions can be taken to stop the erosion and conserve the fertility of the land?
Plant vegetation so that their roots hold the soil firmly.
Build walls around the farm area.
Add natural fertilizers to the soil.
Cut down tall, strong trees that stand in the middle of the farm.
Increase the plowing of soil and grazing in the farm area.
(Can be more than one answer)

Answer 1

Plant vegetation so that their roots hold the soil firmly

Answer 2

Answer: Plant vegetation so that their roots hold the soil firmly.

Build walls around the farm area.

Add natural fertilizers to the soil.

Soil erosion is a process of removal of top layer of soil which get sediment at some other place due to the affect of agents like wind and water. The superficial upper layers of soil are rich source of nutrients and organic matter and active region for germination of seeds and plant growth. Soil erosion removes these superficial layers making soil less fertile or not fertile and less useful for plant growth.

Plants growing in a vegetation have roots which can hold the soil and will prevent soil erosion from wind and water or any other agent. Building of walls around the farm area will prevent flood water to get inside the farm area and hence, prevents soil erosion by water. Addition of natural fertilizers to the soil adds up nutrients to the soil which facilitate plant growth and plant roots hold the soil therefore, prevents soil erosion.