When water is contaminated by poisonous thing is harmful to health, it is called water pollution. Life is another name of water. Water is our life-Savior. Water is used not only for drinking purposes but also for household works, agriculture and industrial works. Water is polluted through these purposes. People use chemical fertilizers and insecticides in their agricultural fields and pollute water. Mills and factories pollute water by throwing wastage into it. Through chemical reaction of different elements from molls and factories water becomes polluted. Ship and boats throw human wastes, oil, and another wastes into the river and sea water and cause the pollution of water. Many people suffer from various diseases for water pollution. Such as cholera, dysentery, diarrhea etc. the ultimate result sometimes comes very destructive such as death of people. To save our own life, we should be careful of it. Alternative sources have to be found out immediately. Otherwise we must face great danger in life. Consciousness and co-operating are necessary in this respect.
Tea is a kind of plant. Tea mainly grows in china, India, japan Indonesia and Ceylon. It grows on the slope of hills or hilly regions, it requires ex cassava rain water but the taint water must not stay at the root. Tea seeds are sown in a nursery in the rainy season. The tea plants grow twenty to thirty feet high in its wild state but they are not allowed to grow so high in the garden. They are pruned and allowed to grow from three to four feel high. There are four crops a year. The first plucking gives the best tea and the rest tea of inferior quality. The preparation of tea is not a hand work .black leaves are dropped in boiled water sugar and milk are also mixed. Thus a tasteful cup of tea is made.