clauses Xth


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clauses Xth

  1. 1. Air pollution may be described as contamination of the atmosphere by gaseous, liquid, or solid wastes or by- products that can endanger human health and welfare of plants and animals, attack materials, reduce visibility (To read about how Haze caused by air pollution can affect visibility , or produce undesirable odors. Although some pollutants are released by natural sources like volcanoes, coniferous forests, and hot springs, the effect of this pollution is very small when compared to that caused by emissions from industrial sources, power and heat generation, waste disposal, and the operation of internal combustion engines. Fuel combustion is the largest contributor to air pollutant emissions, caused by man, with stationary and mobile sources equally responsible. The air pollution problem is encountered outdoor as well as indoor. To read more about the Outdoor Air Pollution and to read more about the Indoor Air Pollution.
  2. 2. Generally if you are young and in a good state of health, moderate air pollution levels are unlikely to have any serious short term effects. However, elevated levels and/or long term exposure to air pollution can lead to more serious symptoms and conditions affecting human health. This mainly affects the respiratory and inflammatory systems, but can also lead to more serious conditions such as heart disease and cancer. People with lung or heart conditions maAir pollution causes damage to plants and animals, affecting biodiversity and crop yields. Defra has a number of research projects investigating the effects of air pollution on vegetetation and ecosystems.y be more susceptible to the effects of air pollution. A variety of air pollutants have known or suspected harmful effects on human health and the environment.
  3. 3. Air pollution comes from many different sources. Natural processes that affect air quality include volcanoes, which produce sulfur, chlorine, and ash particulates. Wildfires produce smoke and carbon monoxide. Cattle and other animals emit methane as a part of their digestive process. Even pine trees emit volatile organic compounds (VOCs). Many forms of air pollution are human-made. Industrial plants, power plants and vehicles with internal combustion engines produce nitrogen oxides, VOCs, carbon monoxide, carbon dioxide, sulfur dioxide and particulates. In most megacities, such as Mexico City and Los Angeles, cars are the main source of these pollutants. Stoves, incinerators, and farmers burning their crop waste produce carbon monoxide, carbon dioxide, as well as particulates. Other human-made sources include aerosol sprays and leaky refrigerators, as well as fumes from paint, varnish, and other solvents. One important thing to remember about air pollution is that it doesn’t stay in one place. Winds and weather play an important part in transport of pollution locally, regionally, and even around the world ,where it affects everything it comes in contact with.
  4. 4. Employing energy-efficient technology such as ENERGY STAR qualified products can help reduce emissions (air pollution) from power plants that produce energy. Carbon dioxide emission is a primary cause of global climate change, sulfur dioxide is a key component of acid rain, and nitrogen oxide is responsible for smogs. Making your business more energy efficient means you will use less energy and save money, while helping the environment at the same time! Since utilities will not need to generate as much electricity, they won't burn as much fossil fuel, which means they are releasing less pollution into the atmosphere.