3. Introduction
Pollution is the introduction of contaminants into the
natural environment that cause adverse
change. Pollution can take the form of chemical
substances or energy, such as noise, heat or
light. Pollutants, the components of pollution, can be
either foreign substances/energies or naturally
occurring contaminants. Pollution is often classed
as point source or nonpoint source pollution.
6. What is Air Pollution
Air pollution is the introduction of particulates,
biological molecules, or other harmful materials into
the Earth's atmosphere, causing disease, death to
humans, damage to other living organisms such as
food crops, or the natural or built environment. Air
pollution may come from anthropogenic or natural
sources.
The atmosphere is a complex natural gaseous system
that is essential to support life on planet Earth.
Stratospheric ozone depletion due to air pollution has
been recognized as a threat to human health as well
as to the Earth's ecosystems.
7. Causes of Air Pollution
Burning of Fossil Fuels
Agricultural activities
Exhaust from factories and
industries
Mining operations
Indoor air pollution
