The water we drink,the air we breathe and the food we eat are contaminated with several impurities and chemicals.This is because the world is becoming polluted.pollution can take many forms:destroyed forests,industrial effluent, motor car fumes,nuclear tests,etc.The sea has become a cheap dumping ground for all kinds of waste products.Chemical and biological warfare, like nuclear warfare,could one day destroy mankind;the weapons used destroy not merely the enemy but vast civilian population as well.It seems we can expect a steady rise in leukaemia and bone cancer in the world.It would be foolish to shut our eyes to the dangers of the pollution that human beings cause.It is true that more and more people have become aware of the dangers of pollution.Campaigns are being organized against cutting down trees.Public opinion is gradually being aroused to concern,and if all of us become concerned about our environment,we shall be able to keep the earth habitable for future generations
