Pollution may be defined as any change in the physicochemical or biological attributes of the environment that causes a disturbance in normal life process and comfort of all organisms including human beings.
Biodegradable Pollutants: Animal excreta, manures and some daily requirements.
Non biodegradable Pollutions: Heavy metals, Organo-chlorine Pesticides and some organic compounds in daily use.
It is a term used by toxicologists to describe the phenomenon in which a combination of chemicals has a tonxic effect greater than the sum of its parts. In the manufacture of pesticides, toxic chemicals are deliberately combined to produced synergistic effect using an additive known as ‘potentiator’ or ’synergist’ to enhance the action of [...]
A bioindicator is a plant or animal species that is known to be particularly tolerant or sensitive to pollution. The presence of the species can be used as a tool to indicate polluted conditions of the particular area. Tubificid worms are an example of pollution-tolerant indicator organisms specially in a river polluted by waste water [...]
