Question

Air pollution definition causes effects and prevention

Answer 1

Air pollution - Air pollution may be defined as the presence of one or more contaminants like dust, mist, smoke and colour in the atmosphere that are injurious human beings, plants and animals.
Rapid industrializationFast urbanizationRapid growth in populationGrowth of vehicles on the roads andActivities of human beings have disturbed the natural balance of the atmosphere.The composition of Air is given below:
Nitrogen                                     78%
Oxygen                                      21%
Argon                                        less than 1%
Carbondioxide                           0.037%
Water vapour                            Remaining
Ozone, Helium and ammonia     Trace amount 

Sources of Air pollution
Sources of  air pollution are of two types.
Natural sources and Artificial sources

Natural sources of pollution are those that are caused due to natural phenomena. Ex: Volcanic eruptions, Forest fires, Biological decay, Pollen grains, Marshes, Radioactive materials.

Artificial sources are those which are created by man. Ex: Thermal power plants, Vehicular emissions, Fossil fuel burning, agricultural activities etc.

Classification of Air Pollutants
Depending on the form of pollutants present in the environment, they are classified as:
Primary pollutants andSecondary pollutantsPrimary pollutants are those that are directly emitted in the atmosphere in the harmful form
Ex: CO, NO, CO2, SO2 etc.

Secondary pollutants are those that are formed by reacting with other components or some basic component of the atmosphere to form new pollutants.
Ex: Oxides of Nitrogen (NO2 or NO3) react with moisture in the atmosphere to give Nitric acid 

Indoor air pollutants are primary air pollutants. The most important indoor air pollutant is Radon gas.
Sources of indoor air pollutants are:
 Radon gas is emitted from building materials like bricks, concrete, tiles, etc that are derived from soil containing radiumRadon is also found  in natural gas and ground water and is emitted while being used.Burning fuel in the kitchen and cigarette smoke release pollutants like CO, SO2, HCHO (Formaldehyde) and BAP (Benzo-(A) pyrene).SOURCES AND COMMON EFFECTS OF COMMON AIR POLLUTANTS
Carbonmonoxide: It is a colourless, odourless gas that is poisonous animals. It is formed by incomplete combustion of carbon containing fuels.
Source of carbonmonoxide is cigarette smoking and incomplete combustion of fossil fuels (more than 77% comes from motor vehicle exhaust)
Health effects include reduced ability of red blood cells to carry oxygen to body cells and tissues. This leads to headache and anemia. At high levels it causes coma, irreversible brain damage and death.

Answer 2

Pollution is defined as mixing of harmful contaminants which is danger into the environment.
Types of pollution:-
Air pollution
Water pollution
Light pollution
Sound pollution,etc

Pollution effects the health of many living organisms and also environment.

Air pollution is caused by the releasing of harmful gases into the atmosphere. Air pollution is mainly caused by the industries by releasing of gases.

Effects on human beings:-
It causes respiratory disease,cardiovascular disease,throat inflammation, chest pain,congestion,etc.
By inhaling the polluted air,it causes respiratory problems.
By drinking the polluted water,it effects.

Effects on environment:-
Carbon dioxide emissions cause ocean acidification, the ongoing decrease in the pH of the Earth's oceans as CO2 becomes dissolved.
The emission of greenhouse gases leads to global warming which affects ecosystems in many ways.

We can control air pollution by
#installing filters in factories
#use eco friendly vehicle for short distance- cycle
#spread awarness
#usage of less fossil fuels
#afforestation and prevent deforestation

Hope it helps....