POLLUTION 

Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.

Earth is considered as the only planet suitable for the life existence in the whole universe. It gives us everything like air, water, land, plants, and sky for the healthy survival of the life. We cannot live here in the absence of all the basic components of life. In any case if the serious pollution problems occur, it causes hazardous to the life. Increasing number of vehicles on the roads and increasing demands of the usage of the petrol and diesel increases the risk of air pollution as petrol and diesel spread heavy amount of poisonous gases in the environment such as carbon monoxide, sulphur-dioxide, hydrocarbons, and many more gases are polluting the air. Now-a-days, a major threat to the life is due to the development of nuclear sciences.

The polluted air we breathe goes to our whole body and affect all the systems especially respiratory functions. It becomes the reason of origin of many diseases like cancer, respiratory problems, lungs disorders, bronchitis, asthma and many more. The increasing competitions of the nuclear experiments all over the world are creating the big threat of atmospheric balance destruction as this process releases lots of harmful chemicals, poisonous gases, and dust into the air which falls back again to the earth through acid rains and harms the growth of crops and life. This acid rain causes various harmful diseases to the human fraternity worldwide. Water pollution is increasing because of the direct drainage of industrial liquid wastes into the water of ocean, lakes, rivers, ponds and other water bodies. This water is used by the farmers in growing crops which we eat and disturb our physiological functioning.