Analyze the influence of laws on health related

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Analyze the influence of laws on health-related environmental issues. Examine strategies for reducing land and water pollution. he wastes generated by human activity can pollute both land T and water. However, there are many actions people can take to reduce pollution and help preserve land and water resources. Waste Disposal M any wastes are , or able to be broken down by microorganisms in the environment. However, when biodegradable materials are discarded in quantities too large for nature to handle, or when materials are not biodegradable, other waste-disposal solutions must be found. Solid Waste Much solid waste ends up in landfills. A is an area that has been safeguarded to prevent disposed wastes from contaminating groundwater. Landfills must be located away from certain areas to protect groundwater (water that collects under the earth’s surface) and must be lined with special materials to prevent leakage. Landfill operators must follow practices that reduce odor and control disease-carrying insects and rodents. landfill biodegradable Write a brief public service announcement encouraging people to help keep lakes, rivers, and streams free of pollution. 772 Chapter 29 Environmental Health Most wastes are disposed of in landfills and covered with soil to prevent the spread of disease by insects and rodents.
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Hazardous Waste A is a substance that is explosive, corrosive, highly reactive, or toxic to humans or other life forms. Industrial processes generate some hazardous wastes. Others are generated by common activities, including those described in Figure 29.4. Household products such as batteries are also considered hazardous wastes. Many of these wastes are banned from landfills and must be disposed of at special collection sites so that they don’t contami- nate the environment. Nuclear wastes, a collection of radioactive materials that pose seri- ous hazards to humans and other life forms, are a type of hazardous waste. Exposure to radiation can increase the risk of cancer. It can also alter a person’s sex cells, causing genetic abnormalities to be passed on to offspring. Because of the long decay rates of some radioactive materials, these materials must be isolated in secure facilities for thousands of years. Expansion and Development hroughout history population growth has been accelerating. T It took half a million years for humankind to reach a population size of 1 billion, but the next billion people were born in a span of only 80 years, and close to 1 1 / 2 billion more have been born since 1975. In certain U.S. communities and world regions, population growth impacts include a low quality of life and much human suf- fering. Rapid population growth also leads to swift deterioration of the land and to a severe drain on resources such as water.
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