Soil Erosion Class4th

 Before starting our lesson, let's begin watching this video:

Answer the following questions:

• Why is the area destined to plant growing very limited?

   

           How much of the Earth crust is covered with water?

           How much of the Earth crust is covered with deserts, ice and mountains?

           How much of the Earth crust is used for towns?

           How much land is left for growing plants?

• What part of the soil is good for growing plants?

•   Why is soil erosion reducing the amount of top soil destined to farming?

Compare the two pictures

• What has happened?

• How can we prevent soil erosion?

Watch the following video and think about some solutions the organic farmer could rely on to avoid his fields suffer from soil erosion.