RRB Group D 9-Nov-2014 Shift 1 Solved Paper

(4) Forest trees drill water into the ground. They funnel water into the underground aquifers where it is stored for supplying to the rivers during drought. Also, they hold soil.
Where there are no trees, the soil is washed away into rivers causing siltation into the oceans choking coral reefs. The loss of ground cover due to deforestation results in flash floods during heavy rainfall,leading to soil erosion.