The grand industrial development,the green revolution,the transport expansion,the rapid growth of cities and accidental management of natural resources have badly affected environmental balance. The pollution of air and water will soon the pollution of air and water will soon reach a point when no place on earth will remain safe. Due to large scale industrial and human settlements on grand scale many rivers have become gloomy and dark. The large scale industrial wastes, and oil poured in the sea have started killing marine life.
Undoubtedly the modern technological development has been the main cause of polluting our air,oceans and rivers etc. It is a matter of great importance that our rivers are becoming dark. Fishes are rotting on sea-shores. Trees are withering and cities are filled with foul air. Toxic chemicals are finding their way into our food. When the normal composition of air is charged,air becomes polluted.
The main causes of air pollution are combustion,manufacturing processes agricultural activities,use of solvents and nuclear energy programs. Combustion can be described in three types- fuel burning,transportation and refuse burning. All these three kinds of combustion release several types of gases. These gases pollute air.
These also cause pollution- chemical plants,metallurgical plants and plants for waste recovery.
The polluted things released from these processes make the air
unfit for human consumption. Agricultural activities are another source of air pollution. The use of chemical fertilizers and manures and burning of field waste pollute the atmospheric air. Several types of solvents are used in spray-painting,polishing of furniture,dying,printing and dry cleaning. The solvents produce hydrocarbons which pollute the air.
Various measures should be adopted to control pollution. To trap smoke particles chambers should be made. Lofty smoke takes should be built. Gases should be discharged through exhaust pipes higher in air . Chemical industries should not be allowed to set upon the banks of rivers .Waste materials should be subjected to anti pollution treatment.
In view of great dangers to mankind,many countries in the world have passed laws to prevent poll8o|ution. But it has been seen that anti pollution laws being obeyed everywhere.
