OBJECTIVE FORESTRY

Detailed explanation-1: -Pollution is the introduction of harmful materials into the environment. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories.

Detailed explanation-2: -Undesirable change in environment Pollution is defined as the change in any physical, chemical, or biological condition of our environment that can harm human life, desirable species of flora and fauna, and natural assets. Pollution is of two types Natural pollution and manmade pollution.

Detailed explanation-3: -The substance which produces pollution is called as pollutants. Pollutant may be the man made like smoke and natural like forest fire.

Detailed explanation-4: -The environmental problems directly related to energy production and consumption include air pollution, climate change, water pollution, thermal pollution, and solid waste disposal. The emission of air pollutants from fossil fuel combustion is the major cause of urban air pollution.