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1. air pollution
- 1. AIR POLLUTION AIR POLLUTION AND IT’S MANAGEMENT GROUP A
- 3. Air pollution Air pollution can be defined as the presence of chemicals or compounds in the air which are usually not present and which lower the quality of the air or cause harmful changes to the quality of life and deteriorates the quality of the atmosphere. It has been one of the major catalyst of global warming and climate change.
- 4. Sources of Primary Air Pollutants
- 5. MAJOR POLLUTANTS OF AIR POLLUTION
- 6. • Due to heavy industrialization and unplanned urbanization done by us, human beings; there has been a lot of dangerous chemicals ejected into the environment which have significantly increased the greenhouse effect. • Humans are heavily dependent upon fossil fuels and In fact 84 percent of world energy still comes from fossil fuels. Rapid population growth and search for luxury can lead to heavy usage of fossil fuels. Human civilization Fossil Fuels Causes
- 7. • Besides from human activities, Air pollution can be caused via some natural activities as well. Different natural disasters such as Volcanic Eruption, Forest Fire etc. They have less effects than the pollution caused by humans • Agriculture can lead to the usage of various chemical fertilizers and pesticides for the benefit of farmers. They contain harmful chemicals and gasses which pollute the air. Practices such as burning weed and fodder also pollutes the air Natural Causes Agricultural activities Causes
- 8. • Greenhouse effect can be defined as the process of heating of the earth’s surface due to the trapped heat from the sun. According to latest studies, It has been concluded that the average temperature of the earth has been increased by 0.8 oC from 1980. • There have been a lot of health issues introduced to the human body due to the air pollution such as: bronchitis, lung cancer, irritation in the eyes, headache, Insomnia, etc. When the AQI(Air Quality Index) is above 200 is similar to having more than 25 cigarettes daily. Greenhouse Effect Human Health Issues Effects
- 9. • Ozone(O3) is a natural gas found in the atmosphere that protects living organisms from harmful UV rays from the sun. Due to various harmful gasses in the air, Ozone has been observed to be decreasing at an alarming rate each year. • Due to climate change, various organisms are going extinct annually. This creates an abrupt change in the food chain of other organisms leading to more extinction. Plants also don’t get enough sunlight due to the high aerosols(solids mixed in air). Ozone layer depletion Disturbance in ecosystem Effects
- 10. • We can only cope with the pollution via knowledge. Several concepts are put forward by geologists across the globe. Such concepts include the famous 3 R’s (Reduce, Reuse, Recycle). If enough people are aware of this concept, a lot of wastages can be avoided resulting in less pollution overall. • As we know, We are heavily dependent upon fossil fuels to run our civilization. Usage of alternative energy such as hydroelectricity, Solar power, nuclear energy can successfully reduce the consumption of fossil fuels without compromising the environment. Awareness Alternative Energy Prevention
- 11. • When people all across the globe contribute towards the same goal, We can achieve anything. Such efforts include activities such as afforestation, awareness campaigns and banning deforestation, etc. • Through Innovation and newer technologies along with advanced concepts, We can also help prevent some pollution or at least minimize it. One of such innovations is cloud seeding. It can help in removing dust via raining. Another is geo engineering. Community efforts Modern Techniques Prevention
- 12. 1990- 31.625% 2000- 31.171% 2005- 30.996% 2015- 30.756% Total land area coverage by forest in the world
- 13. T=Metric ton
- 14. Nepal AQI during March Main reason: Forest fire in several places 421µg/m3 347µg/m3 295µg/m3 487µg/m3
- 15. Some predictions by scientist regarding Air pollution: • Global Energy Crisis • Increase Of Natural Disasters Due To Climate Change • Increase In Air Pollution and air pollution being the reason for top most death in few decades (7 million a year currently) • Water level rise and possibility of coastal countries like Maldives, Sri Lanka to be underwater.
- 16. Gallery
- 17. CREDITS Member: Aarogya Chauhan Aavash Shrestha Aayushma Baniya Abhinav Yadav Anmol Sen