Sound pollution.

Nowadays sound pollution is one of the worst forms of pollution hazards. Sound pollution has some important causes. It is caused by high pitched sound, Continuous blaring of sound or sudden shirking sound. The effect of this pollution is danger for us. They often lead to deafness, mental imbalance and even heart failure. There are many factors that cause sound pollution. Indiscriminate use of microphones, shrill electric horns of motor vehicles. Sounds made by buses, trucks, aeroplanes, various fireworks and slogan shouting. For heavy sound

Air pollution.

Nowadays air pollution is one of the most important topics in our life. Man cannot live a single moment without air, but we are polluting air in many ways. Generally, People create smoke and smoke pollutes air. The most serious air pollution occurs in big cities where there are many vehicles, industries, etc are creating smoke continuously. Mills and factories use coal and oil. These things produce heavy smoke and this smoke pollutes air. Railway engines, buses, trucks, cars other vehicles are plying through on the streets everyday which make

Water pollution.

Like arsenic pollution water pollution is very dangerous. Water is an important element of our human environment. It is essential for all men, animals and plants. We can not live a day without water.  Pure ware is good for health. But polluted water is harmful for all men, animals and plants. We use water for bathing, washing, and other. But it can be polluted in many ways. Arsenic is a poison which is mixed with tube well water and pollutes it. Not only have that, men pollute water by throwing wastes into rivers, ponds, sea, canals etc. Farmers

Environment of Bangladesh.

Nature, land, air, water, plants and other things around us in which we live are called environment. Any abnormal change in chemical, physical and biological characteristics of environment is called pollution. At present our environment is getting polluted every moment. In the 21st century one of the greatest problems is pollution. For pollution our environment becomes damage