(impurities in fuel)‚ metals extraction (from sulphide ores)‚ chemical manufacturing CFC’s- before 1996 from refrigeration‚ air conditioning‚ foam plastics‚ electronics cleaning‚ halon fire extinguishers Ozone- no direct sources; formed in photochemical smog Ozone in the Atmosphere Ozone is an allotrope of the element oxygen- main one being ordinary O2 gas It is poisonous to humans and other life forms when breathed in or come into contact with it Cause breathing difficulties‚ aggravating
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show you more about ozone depletion and how it relates to indoor air pollution. According to our text ozone "is a naturally produced‚ essential component in the stratosphere‚ which encircles our planet some 10 to 45 km (6 to 28 mi) above the surface." (Berg‚ Hager‚ & Hassenzahl. 2011). Ozone in the stratosphere is a good thing‚ when in this layer it absorbs much of the suns ultraviolet rays and protects us from harm. In the troposphere however‚ it is a different story. Ozone there is a combination
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resources. Nowadays‚ as much as our environment is concerned‚ much efforts were already made to de-escalate its destruction. Good in the news update that the ozone layer is now thickening and has stopped from further depletion with respect to the endeavours and cooperation to the multinational agreement Venna Convention on the Protection of the Ozone Layer. What’s ironic is that while efforts to protect the environment are raised to the international level‚ personal level environmental values and behaviors
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Introduction: When air gets polluted with dust‚ smoke‚ motor vehicles‚ mills and factories etc. is called air pollution. We know that air is an important element of our environment. But it is a matter of great regret that it is being polluted day by day in different reasons. Causes of Air pollution: There are different kinds of reasons of air pollution. The causes of air pollution are described below. 1. Using poison in agriculture: In agricultural sectors‚ farmers often use insecticides
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National Environment Policy‚ Multilateral Environment Agreements (MEAs) and Bangladesh Taufiq Akhter taufiqakhter@yahoo.com What is Meant by “Environment” ? Environment means our surroundings‚ which comprises of land‚ water and air and other bodies. Environment is affected by the physical properties of these components. It is also affected by the changes in interrelationship prevailing between an among the components ranging from micro-organism to human bodies (ref: section 2 (d)‚ ECA‚ 1995)
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affect our families and our future one day. There are some problems affecting the environmental stability‚ namely- ozone depletion‚ enhanced greenhouse effect‚ global warming‚ and climate change. First‚ what is ozone depletion? Ozone depletion is defined as the thinning of the ozone layer‚ caused by a group of manufactured chemicals called ozone-depleting substances (ODS). Ozone –depleting-substances include chlorofluorocarbons‚ halons‚ carbon tetrachloride‚ methyl bromide‚ hydrobromofluorocarbons
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Chemistry Ozone Depletion Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth’s stratosphere (the ozone layer)‚ and a much larger springtime decrease in stratospheric ozone over Earth’s polar regions. The latter phenomenon is referred to as theozone hole. In addition to these well-known stratospheric phenomena‚ there are also springtime polartropospheric ozone depletion events. The
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ozone layer or ozonosphere‚ region of the stratosphere containing relatively high concentrations of ozone‚ located at altitudes of 12-30 mi (19-48 km) above the earth’s surface. Ozone in the ozone layer is formed by the action of solar ultraviolet light on oxygen. The ozone layer prevents most ultraviolet (UV) and other high-energy radiation from penetrating to the earth’s surface but does allow through sufficient ultraviolet rays to support the activation of vitamin D in humans. The
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also costs us our well being as well as the beauty and comfort of our own home‚ earth. Ozone depletion‚ climate change as well as the direct effects of chemicals from industrial emissions and fuel combustion are a great threat to our planet and if nothing is done to resolve this problem soon‚ the results may be disastrous. There is a layer of chemicals twenty kilometers up in the stratosphere called the ozone layer. This layer protects the inhabitants of earth by reflecting much of the suns harmful
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The Montreal Protocol on Substances that Deplete the Ozone Layer was adopted in 1987 as an international treaty to eliminate the production and consumption of ozone-depleting chemicals. A subsequent amendment created the Multilateral Fund for the Implementation of the Montreal Protocol‚ becoming the first of the multilateral environmental agreements to establish a financial mechanism for implementation. The World Bank has developed a strong partnership with the Multilateral Fund (MLF) since its
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