Question

Verbal to Non-Verbal : Read the following information and complete the tree diagram.
Soil erosion, a major environmental hazard today is caused by both natural and man-made factors. Soil erosion is caused by unobstructed over flow and the flow of running water which carry away the topmost layer of the soil. Forest fires which destroy the roots of the plants which bind the soil together and lead to erosion.
The effects of soil erosion are flood, drought etc. As the vital nutrients of soil get wasted away, the soil turns barren. Soil erosion can be prevented by construction of dams, bunds etc. Afforestation helps to prevent soil erosion as tree holds the soil together with their roots. Improved method of agriculture such as contour ploughing also help checking soil erosion.

Hint:

When filling diagrams, use short bullet phrases. Separate “cause–effect–prevention” to keep it neat.

Answer 1

Causes: unobstructed overflow; running water; forest fires; deforestation.
Effects: floods; drought; soil becomes barren (loss of nutrients). 
Prevention: construct dams/bunds; afforestation (roots bind soil); improved agriculture (e.g., contour ploughing).

Causes	Effects	Prevention
– Unobstructed overflow  – Running water  – Forest fires  – Deforestation	– Flood  – Drought  – Soil becomes barren	– Construction of dams  – Building bunds  – Afforestation  – Improved agriculture methods (e.g., contour ploughing)