OBJECTIVE FORESTRY

Detailed explanation-1: -The presence in or introduction into the environment of a substance that has harmful or poisonous effects. A pollutant is a substance present in the environment in concentrations that are harmful to the environment and the living beings.

Detailed explanation-2: -Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants.

Detailed explanation-3: -What Are Toxic Air Pollutants? Toxic, or hazardous, air pollutants cause or are suspected of causing cancer, birth defects, or other serious harms. They can be gases, like hydrogen chloride, benzene or toluene, dioxin, or compounds like asbestos, or elements such as cadmium, mercury, and chromium.

Detailed explanation-4: -Air pollution is contamination of the indoor or outdoor environment by any chemical, physical or biological agent that modifies the natural characteristics of the atmosphere. Household combustion devices, motor vehicles, industrial facilities and forest fires are common sources of air pollution.