In this article we will discuss about the meaning and classification of pollutants. Meaning of Pollutants: In general, any substance that causes pollution may be called a pollutant. It can be said that anything in its excess makes any part of the environment undesirable. "The Indian Environment (Protection) Act, 1986" has defined pollutant as any solid, liquid or gaseous substance [...]
The following points highlight the three important pollutants found in ground water. The pollutants are: 1. Nitrate 2. Arsenic 3. Fluoride. Pollutant # 1. Nitrate: Nitrate in ground water is derived mainly from mineralization of soil organic matter or from use of excessive nitrogen fertilisers. The content of nitrate in drinking water is safe in the range of 1-50 mg [...]
In this article we will discuss about:- 1. Meaning of Communities 2. Types of Communities 3. Characteristics. Meaning of Communities: It is now a known fact that individuals of a species together constitute a population. Various places of earth are shared by many coexisting populations and such association is called a community. A generalized definition of community is any assemblage [...]