NATURAL RESOURCES CONSERVATION

Essay specific features

 

Issue:

Science

 

Written by:

Mary S

 

Date added:

November 19, 2011

 

Level:

 

Grade:

A

 

No of pages / words:

6 / 1601

 

Was viewed:

6668 times

 

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Essay content:

Nearly a century before that, the dangers of polluted water to human health drove what became known as the "sanitary revolution" in Europe and the United States, emphasizing clean water supplies and sewer systems in cities. Today, despite progress in cleaning up waterways in some areas, water pollution remains a serious global problem, with impacts on the health of freshwater ecosystems and the human communities that rely on them for water supply...
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(See Figure 1 for a summary of major pollution sources and their effects.) One hundred years ago, the main water contamination problems were fecal and organic pollution from untreated human waste and the byproducts of early industries. Through improved treatment and disposal, most industrialized countries have greatly reduced the effects of these pollutants, with consequent improvements in water quality...
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