Air Pollution and Climatic Changes

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AIR POLLUTION AND CLIMATIC CHANGES
Introduction:
Air pollution is actually the addition of any harmful substances to the atmosphere, which causes the damaging of the environment, human health and the quality of life. Air pollution has been a serious problem throughout the history. This can have series effect on the health of human beings. Every day, the average person inhales about 20,000 liters of air. Every time when we breathe in we inhale dangerous substances. These dangerous substances can be in the form of gases or particles.
Sources of Air pollution:
• Natural source
• Artificial source
Natural sources:
Natural air pollution does not occur in abundance and also possesses little threat to health of the peoples and ecosystem. Volcanic eruptions, Forest fires, Biological decay of organic matters are some of the natural causes of air pollution.
Artificial sources:
The man made reasons for air pollution are vehicular emission, burning of waste products, thermal power plants, industries and refineries. Vehicular emissions are responsible for 70% of the country’s air pollution.
* Bharat stage 1 to 4 emission norms are emission standards that focus on regulating pollutants released by automobiles.
Most sulphur dioxide comes from power plants that use coal as their fuel. Automobiles produce about half of the nitrogen oxide.
When wood, household garbage, plastic, or leaves are burned, they produce smoke and release toxic gases. The smoke contains vapors and solid compounds suspended in the air called particulate matter. The particulate matter and toxic gases released during burning can be very irritating to people’s health.
People who are exposed to these air pollutants can experience eye and nose irritation, breathing difficulty, coughing, and headaches. People with heart disease, asthma, emphysema, or other respiratory diseases are especially sensitive to air pollutants
Major air pollutants:
• Sulphur oxide
• Nitrogen oxide
• Carbonmono oxide

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