听力unit8air water land pollution.docVIP

Air pollution is a significant risk factor for a number of health conditions including respiratory infections, heart disease,?COPD, stroke and lung cancer.[2]?The health effects caused by air pollution may include difficulty in breathing, wheezing, coughing,?asthma?and worsening of existing respiratory and cardiac conditions. These effects can result in increased medication use, increased doctor or emergency room visits, more hospital admissions and premature death. The human health effects of poor air quality are far reaching, but principally affect the bodys respiratory system and the cardiovascular system. Individual reactions to air pollutants depend on the type of pollutant a person is exposed to, the degree of exposure, and the individuals health status and genetics.[15]?The most common sources of air pollution include particulates, ozone, nitrogen dioxide, and sulfur dioxide. Children aged less than five years that live in developing countries are the most vulnerable population in terms of total deaths attributable to indoor and outdoor air pollution.[17] Land pollution is a result of dumping garbage, waste, and other toxins making the land contaminated or polluted. The source of land pollution comes from the human element such as littering, and waste that is washed ashore from boats, oil rigs, and sewage outlets. Another factor contributing to this type of?pollution?is acid rain. The surface of our Earth is also contaminated by poor agricultural practices, mining, and industrial waste.Analyzing the Earths pollution is currently being explored by both non-profit organizations like EarthPlatform and federal agencies such as the Office of Compliance Assistance and Pollution Prevention or OCAPP. The OCAPP works directly with the Environmental Protection Agency (EPA) in a joint effort to control and help clean up both human waste, industrial waste and agricultural waste. How Concerned Should You Be? The excessive waste dumped in landfills or other lan