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Indoor and outdoor air pollution pp.


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Indoor and outdoor air pollution pp.

  2. 2. Air supplies us with oxygen which isessential for our bodies to live.However, human activities can releasesubstances into the air, some of whichcan cause problems for humans,plants and animals.
  3. 3.  Smog Acid rain The greenhouse effect “Holes” in the ozone layer. Each of these problems has serious implications for our health and well- being as well as for the whole environment.
  4. 4.  Is a type of large- scale outdoor pollution. It is caused by chemical reactions between pollutants derived from different sources, primarily automobile exhaust and industrial emissions. Cities are often centers of these types of activities, and many suffer from the effects of smog, especially during the warm months of the year.
  5. 5. For each city, the exact causes of pollution may be different Depending on: The geographical location Temperature Wind and weather factors Pollution is dispersed differently. However, sometimes this doesn´t happen and the pollution can build up to dangerous levels.
  6. 6. When a pollutant, such as sulfuric acidcombines with droplets of water in theair, the water can become acidified.The effects of acid rain on theenvironment can be very serious.
  7. 7.  It damages plants by destroying their leaves It poisons the soil And it changes the chemistry of lakes and streams. Damage due to acid rain kill trees and harms animals, fish, and other wildlife
  8. 8. Is generally believed to come from thebuild up of carbon dioxide gas in theatmosphere. Carbon dioxide isproduced when fuels are burned.Plants convert carbon dioxide back tooxygen, but the release of carbondioxide from human activities ishigher than the world´s plants canprocess.
  9. 9. The situation is made worse sincemany of the Earth´s forests are beingremoved, and plant life is beingdamaged by acid rain. Thus, theamount of carbon dioxide in the air iscontinuing to increase. This build-upacts like a blanket and traps heatclose to the surface of the Earth.
  10. 10. The ozone layer in the Stratosphereprotects the Earth from harmfulultraviolet radiation from the Sun.Release of CFC from aerosol cans,cooling systems and refrigeratorequipment removes some of theozone, causing “holes” allowing theradiation to reach the Earth.
  11. 11. It is the presence of physical,chemical or biologicalcontaminants in the air of confinedenvironments, which are notnaturally present in high quantitiesin the external air of the ecologicalsystems.
  12. 12. Many people spend large portion of time indoors: Weeat work study sleep drink in enclosed environments, where air circulation may be restricted.
  13. 13.  Tobacco smoke Cooking and heating appliances Vapors from building materials Paints Furniture Varnishes Detergents Pesticides
  14. 14.  Numerous chemicals are used inside home. Many items inside our homes and materials used in home construction are notorious for letting off poisonous gasses for years.
  15. 15. NASA studies show that having ampleplants indoors can detoxify up to 85percent of indoor air pollution. Theyact like a filter for the air.
  16. 16. Its also important to open thewindows and doors of your home,daily if possible, to allow fresh air tocirculate in.
  17. 17. Having plants inside adds oxygen tothe air youre breathing, and havingplants inside is even known todecrease the stress levels of theinhabitants.
  18. 18. Ultraviolet radiation is known to causeskin cancer and has damaging effectson plants and wild life.
  19. 19. Air pollution can affect our health inmany ways with both short-term andlong-term effects.Children and elderly people oftensuffer more from the effects of airpollution.People with health problems such asasthma, heart and lung disease mayalso suffer more when the air ispolluted.
  20. 20.  Irritation to the eyes, nose and throat Upper respiratory infections such as bronchitis and pneumonia. Other symptoms can include headaches, nausea and allergic reactions.
  21. 21.  Chronic respiratory disease Lung cancer Heart disease Even damage to the brain, nerves, liver or kidneys. Continual exposure to air pollution affects the lungs of growing children and may aggravate or complicate medical conditions in the elderly.