6. Air pollution may be described as contamination of the
atmosphere by gaseous, liquid, or solid wastes or by-
products that can endanger human health and welfare of
plants and animals, attack materials, reduce visibility
(To read about how Haze caused by air pollution can
affect visibility , or produce undesirable odors. Although
some pollutants are released by natural sources like
volcanoes, coniferous forests, and hot springs, the effect
of this pollution is very small when compared to that
caused by emissions from industrial sources, power and
heat generation, waste disposal, and the operation of
internal combustion engines. Fuel combustion is the
largest contributor to air pollutant emissions, caused by
man, with stationary and mobile sources equally
responsible. The air pollution problem is
encountered outdoor as well as indoor. To read more
about the Outdoor Air Pollution and to read more about
the Indoor Air Pollution.

7. Generally if you are young and in a good state of
health, moderate air pollution levels are unlikely to have
any serious short term effects. However, elevated levels
and/or long term exposure to air pollution can lead to
more serious symptoms and conditions affecting human
health. This mainly affects the respiratory and
inflammatory systems, but can also lead to more serious
conditions such as heart disease and cancer. People with
lung or heart conditions maAir pollution causes damage
to plants and animals, affecting biodiversity and crop
yields. Defra has a number of research projects
investigating the effects of air pollution on vegetetation
and ecosystems.y be more susceptible to the effects of
air pollution. A variety of air pollutants have known or
suspected harmful effects on human health and the
environment.

8. Air pollution comes from many different sources. Natural processes
that affect air quality include volcanoes, which produce
sulfur, chlorine, and ash particulates. Wildfires produce smoke and
carbon monoxide. Cattle and other animals emit methane as a part
of their digestive process. Even pine trees emit volatile organic
compounds (VOCs). Many forms of air pollution are human-made.
Industrial plants, power plants and vehicles with internal combustion
engines produce nitrogen oxides, VOCs, carbon monoxide, carbon
dioxide, sulfur dioxide and particulates. In most megacities, such as
Mexico City and Los Angeles, cars are the main source of these
pollutants. Stoves, incinerators, and farmers burning their crop
waste produce carbon monoxide, carbon dioxide, as well as
particulates. Other human-made sources include aerosol sprays and
leaky refrigerators, as well as fumes from paint, varnish, and other
solvents. One important thing to remember about air pollution is that
it doesn’t stay in one place. Winds and weather play an important
part in transport of pollution locally, regionally, and even around the
world ,where it affects everything it comes in contact with.

9. Employing energy-efficient technology such as
ENERGY STAR qualified products can help reduce
emissions (air pollution) from power plants that
produce energy. Carbon dioxide emission is a
primary cause of global climate change, sulfur
dioxide is a key component of acid rain, and
nitrogen oxide is responsible for smogs. Making
your business more energy efficient means you will
use less energy and save money, while helping the
environment at the same time! Since utilities will
not need to generate as much electricity, they
won't burn as much fossil fuel, which means they
are releasing less pollution into the atmosphere.