Question

What is meant by Pollutant?

Answer 1

In general, substance or energy introduced into the environment that has undesired effects, or adversely affects the usefulness of a resource. 

Answer 2

Explanation:

Pollution is the introduction into the natural environment of pollutants that cause adverse changes. Pollution, including sound, heat or light, may take the form of chemical substances or fuel.

Pollutants, the pollution components, can either be foreign substances / energies or contaminants that occur naturally. A pollutant is a material or energy that has undesirable effects in the atmosphere or has an adverse effect on the usefulness of a commodity. Different pollutant forms include: Nitrogen oxides, Sulfur oxides,Particulate matter, Ground level ozone, Mercury etc.