Pollution can be defined as the mixing of bad one with a good one. There are many causes of pollution. But, only a few can be treated as the basic causes from which the other causes originate.
These causes can be classfied as industrial and domestic causes. The description of them are as follows:
1. Industrial causes: The emissions from the factories and automobile causes air pollution and the wastes from dyeing industries cause water pollution.
2. Domestic causes: The waste water from houses when disposed off to the rivers, cause water pollution. The burning of plastics too causes air pollution.