EONS ONE ON 

V) Soil erosion: Plants of the forests are important in soil stability. The leafy canop 

of the trees protects the soil from the impact of the falling rain. When th trees removed, the soil is exposed directly to the force of rain and wate run off becomes intense. Top soil, the most fertile layer, gets washed awa 

during heavy rain especially on steep slopes, leaving the soil unfertile. Thi. washed off soil is deposited in the dams and other water reservoirs to brin. 

their water storing capacity rapidly down. 19.3.3 Control and preventive measures: Pollution has been a problem to man for many years. It is the procedure by the human harmful substances are added to the environmental. As huma population increases and as society becomes more industrialized an. urbanized, the progress of pollution is become our serious. Many product. of modern technology are toxic. These toxic wastes find their way into th: air and water, threatening the lives of organisms in the ecosystem. Hencs the sources of pollution must be identified and techniques be devised ts prevent and to reduce pollution. 

As the human population is continuously increasing and livin: standards becoming higher, the effects which we have on the environmen have become even greater. It is very important that we do our best to understand vhat we are doing and what the effects might be. The more we understand, he more we can do to prevent too much damage to the earth and keep it a 

leasant place for humans, plants and other animals to live in. The following are some ways by which air and water pollutions can | 

reduced, I, 

(i) Use of catalytic converters in cars. , (i] Establishing mass transit system or having car pools. 

it is in movement of all environment away all the time